Complete list of learning disabilities: what parents need to know

Last updated 2026-07-09

What counts as a learning disability under federal law?

The federal Individuals with Disabilities Education Act (IDEA) defines a 'specific learning disability' as 'a disorder in one or more of the basic psychological processes involved in understanding or in using language, spoken or written, that may manifest itself in the imperfect ability to listen, think, speak, read, write, spell, or to do mathematical calculations.' ^[1] That definition matters. It is the legal threshold your child's school must use when deciding whether to evaluate and then whether to provide services.

IDEA lists eight areas that can qualify: oral expression, listening comprehension, written expression, basic reading skill, reading fluency skills, reading comprehension, mathematics calculation, and mathematics problem solving. ^[1] A child does not have to struggle in all eight. One area is enough if the deficit is significant and not better explained by another cause like uncorrected vision, limited English, or lack of adequate instruction.

Learning disabilities are neurological. They are not the result of low intelligence, bad parenting, or laziness. The National Institutes of Health puts the prevalence of dyslexia alone at 5 to 15 percent of the population, and many children carry more than one learning disability at the same time. ^[2] The overlap is common enough that researchers have a word for it: comorbidity.

One thing to be clear about. Attention deficit hyperactivity disorder (ADHD) is not a specific learning disability under IDEA's SLD category, though it often shows up next to one. ADHD qualifies for school services under a different IDEA category called 'Other Health Impairment,' or under Section 504 of the Rehabilitation Act. I'll flag where ADHD overlaps with SLDs below, but it travels its own separate legal path.

What are the main types of learning disabilities?

Here is every recognized specific learning disability, what it affects, and what it looks like in a school-age child.

Dyslexia is the most studied and most common SLD. At its core it is a phonological processing problem: the brain has trouble connecting letters to sounds, which makes decoding new words slow and effortful. ^[2] Children with dyslexia often read below grade level despite normal or above-normal intelligence, and spelling tends to be a mess too. There are several subtypes, including phonological dyslexia, surface dyslexia, deep dyslexia, and visual dyslexia. Some children also have a rapid naming deficit, and the combination of slow naming and weak phonological skills is called double deficit dyslexia.

Dyscalculia affects number sense and mathematical reasoning. A child with dyscalculia may struggle for years with counting, place value, memorizing math facts, telling time, or handling money. It affects roughly 3 to 7 percent of school-age children, though prevalence research is less settled than it is for dyslexia. ^[3] Dyscalculia is sometimes called number dyslexia, though that is an informal term.

Dysgraphia affects written expression. It goes well past messy handwriting. Children with dysgraphia often can't organize thoughts on paper, form letters inconsistently, write very slowly, and burn out fast when writing. It shows up alongside dyslexia a lot, but it is a separate condition.

Specific reading comprehension deficit is distinct from dyslexia. A child can decode words accurately and fluently and still fail to understand what they read. The extreme version is sometimes called 'hyperlexia.' These children read aloud beautifully and have no idea what the passage meant.

Oral and written language learning disability (OWL LD) affects language at a systems level, covering syntax, morphology, and discourse. It hits both understanding spoken language and producing it, in writing and in speech.

Nonverbal learning disability (NVLD) is not an official DSM-5 diagnosis yet, but it is recognized in educational and neuropsychological practice. Children with NVLD tend to have strong verbal skills but real trouble with visual-spatial tasks, math reasoning, reading social cues, and adapting to new situations. It is tied to right-hemisphere processing differences.

Auditory processing disorder (APD) means the ears work fine but the brain struggles to interpret what it hears, especially in noise or when speech comes fast. APD is diagnosed by an audiologist, not a psychologist. That trips up a lot of families who see the wrong specialist first.

Language processing disorder (LPD) is a subtype of APD that specifically hits the processing of language, as opposed to non-language sounds. It affects both expressing and receiving language.

Visual perceptual or visual motor deficit affects how the brain processes visual information. It can interfere with reading, writing, and copying even when eyesight itself is perfect. Many of these children get sent to an eye doctor first, who finds nothing wrong, because the problem sits in the brain's visual pathways, not the eye.

Developmental coordination disorder (DCD), sometimes called dyspraxia, affects motor planning and coordination. It looks like awkward handwriting, trouble with scissors or sports, and problems sequencing physical tasks. DCD is filed separately from SLDs in some frameworks, but it co-occurs often and drags down written output in school.

Here's a quick comparison table:

Learning Disability	Primary Area Affected	Estimated Prevalence (school-age)	Qualifies Under IDEA SLD?
Dyslexia	Reading/decoding/spelling	5-15% [2]	Yes
Dyscalculia	Math calculation/reasoning	3-7% [3]	Yes
Dysgraphia	Written expression/handwriting	~10% (estimates vary)	Yes
Specific reading comprehension deficit	Reading comprehension	Less studied	Yes
OWL LD	Oral and written language	Less studied	Yes
NVLD	Visual-spatial/math reasoning	~3% (estimated)	Varies by school
Auditory processing disorder	Auditory interpretation	2-7% [4]	Sometimes (via SLD or OHI)
Language processing disorder	Language comprehension/expression	Subset of APD	Sometimes
Visual perceptual/motor deficit	Visual processing/motor output	Less studied	Yes (if educational impact shown)
Developmental coordination disorder (DCD/Dyspraxia)	Motor planning/coordination	5-6% [5]	Usually OHI or 504, not SLD

How is each learning disability identified and diagnosed?

Diagnosis runs on two tracks: the school evaluation and a private neuropsychological evaluation. They are not the same thing, and knowing the difference saves families a lot of frustration.

The school track starts when you send a written request for a special education evaluation. IDEA requires the school to complete the evaluation within 60 days of receiving your written consent (some states set a shorter window, so check your state's regulations). ^[1] The school evaluation is free and must be multidisciplinary: a psychologist, a special education teacher, and relevant specialists all weigh in. It answers two questions. Does your child have a disability, and does that disability require special education services? The school evaluation may or may not hand you a diagnostic label like 'dyslexia.' Many schools use the educational label 'specific learning disability in reading' and never say the word dyslexia, though more than 40 states now have laws requiring schools to use dyslexia-specific terminology and interventions. ^[6]

The private track means taking your child to a licensed educational psychologist, clinical psychologist, or neuropsychologist for a full evaluation. This usually runs 6 to 12 hours of testing across several sessions and costs $2,000 to $5,000 out of pocket depending on where you live, though some university training clinics run sliding-scale evaluations for a lot less. ^[7] Private evaluations tend to give you cleaner diagnostic labels and more detailed subtest data. Schools must consider a private evaluation, but they are not legally required to adopt its conclusions.

For dyslexia, a good evaluation covers phonological awareness, phonological memory, rapid automatized naming, single-word reading, nonsense-word decoding, reading fluency, and spelling. The Yale Center for Dyslexia and Creativity notes that no single test score makes a diagnosis; the clinician reads a pattern across measures. ^[7]

For dyscalculia, the evaluation adds math fluency, calculation accuracy, number sense tasks, and working memory. For dysgraphia, it adds handwriting speed, orthographic coding, and written expression tasks.

If you want to understand what a learning disability evaluation covers at your child's school, you can request a learning disability test overview, and if dyslexia is the specific worry, a dyslexia test guide walks through what assessors actually measure.

What are the signs of a learning disability by age?

Parents often spot something before any professional does. Here is what to watch for, stage by stage.

Preschool (ages 3-5): Late talking, trouble learning nursery rhymes or hearing which words rhyme, slow learning of the alphabet or the letter-sound link, and weak fine motor skills. None of these alone is diagnostic. A cluster warrants a speech-language evaluation.

Kindergarten and first grade (ages 5-7): This is where reading disabilities surface. A child who cannot break words into sounds (hear that 'cat' has three sounds: /k/ /ae/ /t/) by the end of kindergarten is at risk. Reversing b and d is normal through about age 7 and is not the defining feature of dyslexia. The signals that matter most are slow learning of letter-sound correspondences, trouble blending sounds, and resistance to reading aloud. ^[2]

Second and third grade (ages 7-9): By second grade most children read connected text with some fluency. A child still sounding out every word one letter at a time, or reading so slowly that comprehension collapses, needs evaluation. Handwriting that is much harder to read than peers' and flat avoidance of writing point to possible dysgraphia. For math, a child who still can't count on or grasp what addition facts mean after lots of practice points toward dyscalculia.

Fourth grade and up: The curriculum flips from 'learning to read' to 'reading to learn.' Learning disabilities that a child muscled through on effort alone now break into the open. Comprehension cracks when texts get longer and denser. Written assignments get harder. If your child hit a wall around fourth grade, that is a classic presentation.

Middle and high school: Teenagers with undiagnosed learning disabilities often get read as students who 'don't try' or who are anxious about school. Slow reading speed that tanks timed tests, avoidance of writing, and trouble with multi-step math are common late presentations. The signs of dyslexia page has a full checklist for older students.

What are a child's legal rights when they have a learning disability?

Two federal laws cover this: IDEA (20 U.S.C. § 1400 et seq.) and Section 504 of the Rehabilitation Act of 1973 (29 U.S.C. § 794). They work differently.

IDEA covers children age 3 through 21 who have a disability in one of 13 eligibility categories (SLD is one) AND who need specially designed instruction because of it. If your child qualifies, the school must provide a free appropriate public education (FAPE) through an Individualized Education Program (IEP). The IEP is a legally binding document that spells out goals, services, placement, and accommodations. Schools must hold an IEP meeting at least once a year and reevaluate the child at least every three years. ^[1]

Section 504 has a lower bar. It covers any student with a physical or mental impairment that 'substantially limits' one or more major life activities, and learning and reading are on that list. ^[8] A child who has a learning disability but doesn't need specially designed instruction (maybe they're close to grade level with minimal support) may qualify for a 504 plan. That plan provides accommodations like extended time, preferential seating, or text-to-speech tools without the full IEP machinery.

Key parent rights under IDEA:

• You can request an evaluation in writing at any time. The request starts the clock.
• You must give written consent before the school evaluates your child, and again before it provides services.
• If you disagree with the school's evaluation, you can request an Independent Educational Evaluation (IEE) at school expense if you meet the procedural criteria. ^[1]
• You can dispute decisions through mediation, a due process hearing, or a state complaint.
• You can bring an advocate or attorney to any IEP meeting.

One practical note. The 60-day evaluation timeline under IDEA counts from the date the school receives your written consent, not your written request. Keep dated copies of everything.

Section 504 does not carry the same procedural detail in federal law. The process gets set more at the district level, which is why 504 plans vary more from school to school than IEPs do. ^[8]

How common are learning disabilities in US schools?

About 7.5 million students received special education services under IDEA in the 2021-22 school year. ^[9] Of those, students with specific learning disabilities made up roughly 33 percent, the single largest eligibility category. The U.S. Department of Education estimates that SLD affects about 5 percent of public school students overall. ^[9]

Dyslexia accounts for most SLD diagnoses. The National Institute of Child Health and Human Development (NICHD) has stated that dyslexia affects 5 to 15 percent of the population depending on the diagnostic criteria used. ^[2] Estimates for dyscalculia run 3 to 7 percent. ^[3] The overlap between dyslexia and dyscalculia is roughly 40 percent, which means a lot of children carry both.

Girls get diagnosed with learning disabilities at lower rates than boys in school, but research suggests the actual prevalence is close to even. Girls tend to build compensating strategies that mask the deficit, and teachers may be slower to refer them. That is not a theory. It is a pattern that repeats across multiple studies. If your daughter is working brutally hard and still struggling, don't let 'she seems fine' close the conversation.

Learning disabilities last into adulthood. They don't vanish; they get managed. Adults with well-supported learning disabilities go to college, hold professional jobs, and live completely ordinary lives. Early identification and evidence-based intervention are what change the outcome, not the disability itself.

What reading interventions actually work for learning disabilities?

The most replicated finding in reading science is blunt: structured literacy, meaning systematic, explicit phonics-based teaching, produces better outcomes for children with reading disabilities than whole-language or balanced-literacy approaches. The National Reading Panel's 2000 report and the later work of researchers like Louisa Moats, Maryanne Wolf, and Stanislas Dehaene all point the same way. ^[10]

For dyslexia, the International Dyslexia Association names Orton-Gillingham-based programs and structured literacy as the approaches with the strongest evidence. Programs that have met Every Student Succeeds Act (ESSA) evidence tiers include Wilson Reading System, Barton Reading and Spelling, RAVE-O, and SPIRE, among others. ^[6] They work through systematic phonological awareness training, phonics decoding, fluency building, and vocabulary instruction.

For dyscalculia, the evidence base is thinner. Number sense interventions that move from concrete manipulatives to visual representations to abstract notation (the CRA sequence: concrete, representational, abstract) show positive results. The What Works Clearinghouse at the U.S. Department of Education has reviewed several math intervention programs. ^[9]

For dysgraphia, occupational therapy addresses the motor side, but the academic side needs explicit handwriting instruction (Handwriting Without Tears is one commonly used program) plus accommodations like keyboarding and speech-to-text.

One thing I'll say straight to any parent: be skeptical of programs that promise to fix a learning disability with eye exercises, colored overlays, or dietary supplements. The research support for those is weak to nonexistent. The International Dyslexia Association has a position statement on it. ^[6] Money and time spent on unproven methods is money and time not spent on what works.

Building sight word automaticity is part of reading fluency for many struggling readers. dolch sight words, sight word flashcards, and first grade sight words lists are practical starting points for home practice alongside whatever structured literacy program the school runs. The ReadFlare free reading toolkit has printable versions of these if you want them in one place.

For children with auditory processing disorder, the plan looks different. It usually means preferential seating close to the teacher, an FM system in the classroom, and specific auditory training programs recommended by an audiologist. The APD plan will not look like the dyslexia plan.

What accommodations can a student with a learning disability get at school?

Accommodations change how a student accesses learning without changing what they're expected to learn. Modifications change the content or the expectations themselves. Parents should know the difference, because schools sometimes offer modifications when a child actually needs accommodations, and modifications can slow academic progress.

Common accommodations for learning disabilities include:

• Extended time on tests and assignments (typically 1.5x or 2x the standard time)
• Text-to-speech software for reading tasks
• Speech-to-text software for writing tasks
• Reduced copying from the board
• Access to notes or graphic organizers
• Preferential seating
• Tests given in a separate, quiet setting
• A calculator or multiplication chart for students whose disability is in calculation, not math reasoning
• Audiobooks alongside print texts
• Spell-check tools

For standardized testing (SAT, ACT, state assessments), accommodations must be documented in an IEP or 504 plan and, for College Board and ACT tests, formally approved by those organizations. The approval can take months, so start it well ahead of the test date. Don't wait until junior year.

The IEP team decides which accommodations go in the document. You are a full member of that team. If you think a certain accommodation would help and the team disagrees, you can ask that your disagreement be noted in the meeting minutes, and you can pursue dispute resolution if it comes to that.

Can a learning disability affect reading comprehension specifically?

Yes, and this is one of the most missed presentations. Most public talk about learning disabilities and reading fixes on decoding: sounding out words. But there's a separate profile called specific reading comprehension deficit (hyperlexia at the extreme end) where decoding is fine and comprehension is poor.

The Simple View of Reading, proposed by Gough and Tunmer in 1986 and backed by a large body of later research, says reading comprehension is the product of two things: decoding skill and language comprehension ability. ^[10] A child can be weak in either or both. A classic dyslexic profile is weak decoding paired with solid language comprehension. A specific reading comprehension deficit is the reverse: strong decoding, weak language comprehension. Both produce poor reading outcomes, and both need different interventions.

For the comprehension-deficit profile, the plan targets oral language development, vocabulary, background knowledge, and explicit strategy instruction in inference-making and text structure. Phonics-heavy intervention alone won't move the needle much, because phonics is not where these children struggle.

This is why a good evaluation always measures both components separately. If your child's school tested only word reading accuracy, you don't have the full picture.

Is ADHD a learning disability?

No. ADHD is not classified as a specific learning disability under IDEA or in the DSM-5. It's a neurodevelopmental disorder affecting attention, impulse control, and executive function. It's real, it hits school performance hard, and it often shows up next to a learning disability. But it takes its own separate legal path at school.

Under IDEA, most students with ADHD qualify under the 'Other Health Impairment' (OHI) category rather than SLD. Under Section 504, ADHD frequently qualifies a student for accommodations because it substantially limits the major life activity of learning. ^[8]

The co-occurrence rate is high. Research suggests about 25 to 40 percent of children with dyslexia also meet criteria for ADHD. ^[2] When both are present, both need attention. Treating ADHD without touching the reading disability (or the other way around) usually leaves a child still stuck.

If your child has an ADHD diagnosis and is also struggling with reading, ask the school directly about an SLD evaluation. The two disabilities don't cancel each other out, and a child can have both on one IEP.

What should parents do first if they suspect a learning disability?

The single most effective first step is a written evaluation request to the school. Not a chat at pickup, not a vague email. A written letter addressed to the principal or special education director, dated, kept in your records. That letter starts the legal clock. ^[1]

While you wait for the school process, write down what you're seeing at home: specific reading struggles, homework avoidance, emotional reactions to schoolwork, reading speed. Date every note. This record earns its keep in IEP meetings.

If your child is in a general education classroom and struggling, ask whether the school uses a Multi-Tiered System of Supports (MTSS) or Response to Intervention (RTI) framework. These models layer in increasingly intensive interventions before or alongside a formal evaluation. IDEA allows but does not require schools to use RTI data as part of SLD identification. ^[1] The catch: a school cannot use RTI to stall a needed evaluation. If you request an evaluation in writing, the school must respond no matter where your child sits in an RTI tier.

The ReadFlare parent advocacy kit walks through how to write the evaluation request letter, what to expect at each meeting, and how to read your child's assessment scores, if you want a structured guide.

One more thing: trust yourself. Parents who push for evaluation earlier tend to get their children into services earlier. The research on early intervention for reading disabilities is clear. Outcomes are far better when intervention starts in kindergarten or first grade than when it starts in third grade or later. ^[10] Waiting to see if a child catches up is the riskiest move on the board.

Frequently asked questions

What is the full list of learning disabilities recognized by federal law?

IDEA identifies eight areas that can qualify as a specific learning disability: oral expression, listening comprehension, written expression, basic reading skill, reading fluency skills, reading comprehension, mathematics calculation, and mathematics problem solving. Common named conditions within those areas include dyslexia, dyscalculia, dysgraphia, auditory processing disorder, language processing disorder, nonverbal learning disability, and visual processing disorder.

What is the most common learning disability?

Dyslexia is the most common specific learning disability. The National Institute of Child Health and Human Development estimates it affects 5 to 15 percent of the school-age population. It makes up most SLD diagnoses in U.S. schools. Dyscalculia is second, affecting an estimated 3 to 7 percent of children.

What is the difference between dyslexia and dyscalculia?

Dyslexia affects reading and spelling through a core weakness in phonological processing, the brain's ability to connect sounds and letters. Dyscalculia affects number sense, math fact retrieval, and mathematical reasoning. They are separate conditions hitting different cognitive systems, though they co-occur in roughly 40 percent of cases. Both qualify as specific learning disabilities under IDEA.

At what age can a learning disability be diagnosed?

Signs of dyslexia and language-based learning disabilities can show up as early as preschool: delayed talking, trouble with rhymes, slow alphabet learning. A formal diagnosis is typically made between ages 6 and 8, once reading instruction has started and deficits become measurable. Some neuropsychologists evaluate children as young as 4 to 5 for risk factors.

Does a learning disability qualify for an IEP?

Yes, if two things are true: the child has an SLD in one of the eight areas IDEA specifies, and the disability requires specially designed instruction. If the child has an SLD but performs near grade level with standard instruction, they may qualify for a 504 plan with accommodations instead. The IEP provides both services and accommodations; a 504 plan provides accommodations only.

Can a child have more than one learning disability?

Yes, and it's common. About 40 percent of children with dyslexia also have dyscalculia. Dyslexia and dysgraphia frequently co-occur. ADHD, while not itself an SLD, co-occurs with dyslexia in roughly 25 to 40 percent of cases. Each co-occurring condition should be identified and addressed on its own, because the interventions differ.

Is auditory processing disorder a learning disability?

Auditory processing disorder (APD) can qualify for school services under IDEA, but the legal category depends on how much it affects learning. It's diagnosed by an audiologist. Some children with APD qualify under SLD, others under Speech-Language Impairment or Other Health Impairment. The deciding factor is educational impact, not the diagnosis label alone.

What is a nonverbal learning disability (NVLD) and does it qualify for an IEP?

NVLD is a neuropsychological profile marked by strong verbal skills but significant weaknesses in visual-spatial processing, math reasoning, and social cognition. It's not a formal DSM-5 diagnosis, so school eligibility is inconsistent. A child with NVLD may qualify for an IEP under SLD (math or written expression) or under Other Health Impairment if ADHD is also present. Document educational impact carefully.

What is the difference between a learning disability and an intellectual disability?

A specific learning disability affects one or more specific areas of academic processing while general intelligence stays in the average range or above. An intellectual disability (formerly called mental retardation) involves significantly below-average general intellectual functioning across areas. IDEA treats them as separate eligibility categories. A child with a learning disability is not intellectually disabled, though both may need IEP services.

How long does a school learning disability evaluation take?

Under IDEA, once you give written consent, the school has 60 days to complete the evaluation and hold an eligibility meeting. Some states set shorter windows (California uses 60 calendar days; other states count school days). The testing itself typically runs 6 to 10 hours with your child, spread over several sessions.

What is dysgraphia and how is it different from messy handwriting?

Dysgraphia is a specific learning disability affecting written expression. It involves trouble with letter formation, handwriting automaticity, spelling, and organizing thoughts in writing. Messy handwriting alone does not mean dysgraphia. The defining features are how effortful writing is, how inconsistent it stays even within a single session, and how the difficulty blocks a child from showing what they know on paper.

Can learning disabilities be outgrown?

Learning disabilities do not disappear. They are lifelong neurological differences. With strong, early, evidence-based intervention, many children build effective compensating skills and perform at or near grade level. But the underlying processing difference stays. Adults with dyslexia, for example, still show different brain activation patterns during reading than typical readers, even when their reading scores are average.

What is the difference between an IEP and a 504 plan for a learning disability?

An IEP (under IDEA) provides both specialized instruction and accommodations. A 504 plan (under the Rehabilitation Act) provides accommodations only, with no specially designed instruction. IEPs carry more procedural protections and more detail. A 504 is faster to put in place and fits when a child needs support but not intensive specialized teaching. Both are legally binding.

What reading programs are proven to work for students with dyslexia?

Programs built on structured literacy have the strongest evidence. These include Wilson Reading System, Barton Reading and Spelling, RAVE-O, and SPIRE, among others. They share systematic, explicit phonics instruction with multisensory components. The International Dyslexia Association and the What Works Clearinghouse at the U.S. Department of Education both keep lists of reviewed programs. Whole-language approaches alone have not shown effectiveness for dyslexia.

Sources

1. U.S. Department of Education, Individuals with Disabilities Education Act (IDEA) statute text, 20 U.S.C. § 1401: IDEA's definition of specific learning disability, the eight qualifying areas, the 60-day evaluation timeline, IEP requirements, and parent rights including IEE
2. National Institute of Child Health and Human Development (NICHD), NIH, Learning Disabilities information page: Dyslexia prevalence of 5 to 15 percent of the population; ADHD-dyslexia co-occurrence; neurological basis of learning disabilities
3. Butterworth B, Varma S, Laurillard D. 'Dyscalculia: from brain to education.' Science. 2011;332(6033):1049-1053.: Dyscalculia estimated prevalence of 3 to 7 percent of school-age children
4. American Speech-Language-Hearing Association (ASHA), Auditory Processing Disorder technical report: Auditory processing disorder estimated prevalence of 2 to 7 percent; diagnosis by audiologist; classroom impact
5. Blank R et al. 'International clinical practice recommendations on the definition, diagnosis, assessment, intervention, and psychosocial aspects of developmental coordination disorder.' Developmental Medicine and Child Neurology. 2019;61(3):242-285.: Developmental coordination disorder affects approximately 5 to 6 percent of school-age children
6. International Dyslexia Association, Knowledge and Practice Standards and state law overview: More than 40 states have dyslexia-specific laws; Orton-Gillingham and structured literacy evidence base; position on unproven treatments
7. Yale Center for Dyslexia and Creativity, Evaluation information: Private neuropsychological evaluations cost $2,000 to $5,000; no single test score makes a dyslexia diagnosis; components of a thorough dyslexia evaluation
8. U.S. Department of Education Office for Civil Rights, Section 504 of the Rehabilitation Act guidance: Section 504 'substantially limits' standard covering learning and reading; accommodations without specially designed instruction; district-level process
9. U.S. Department of Education, National Center for Education Statistics (NCES), Students with Disabilities data: Approximately 7.5 million students received IDEA services in 2021-22; SLD is the largest eligibility category at roughly 33 percent of served students; SLD affects about 5 percent of public school students
10. National Reading Panel, 'Teaching Children to Read: An Evidence-Based Assessment of the Scientific Research Literature on Reading and Its Implications for Reading Instruction.' NICHD, 2000.: Structured literacy and systematic phonics produce better outcomes for children with reading disabilities; Simple View of Reading framework; early intervention advantage