Last updated 2026-07-10
TL;DR
No. Under IDEA, a school only needs consent from one parent to conduct an initial IEP evaluation. The law defines 'parent' to include any one biological parent, adoptive parent, or other qualifying adult. A school cannot legally require both parents to sign before moving forward, even in a two-parent household or a divorce situation.
What does IDEA actually say about parent consent for an IEP evaluation?
One parent's signature is enough. The federal law that governs special education is the Individuals with Disabilities Education Act, known as IDEA. The consent requirement sits in 34 CFR § 300.300, which says a public agency must obtain "informed consent" from the parent before conducting an initial evaluation.[1] The word parent is singular. The regulations do not say parents, plural, and that is not an accident.
IDEA's definition of 'parent' at 34 CFR § 300.30 lists a natural or adoptive parent, a guardian, an individual acting in the place of a parent (including a grandparent or stepparent the child lives with), and a surrogate parent appointed by the agency.[2] Any one person who meets that definition can give valid consent. There is no provision requiring a second adult to co-sign, agree, or even be notified before the evaluation begins.
This is the baseline federal rule. States can add procedural protections on top of it, but they cannot subtract from IDEA's minimum rights.[3] So if your state has no separate rule requiring dual consent, and most do not, one parent's signature is enough.
Can a school legally require both parents to consent before starting the evaluation?
No. Requiring both parents to sign before a school will conduct an IEP evaluation is not consistent with IDEA, and it can amount to a denial of a free appropriate public education (FAPE) if the delay leaves the child without needed services.[1]
Schools sometimes ask both parents to sign out of administrative habit, or because they want to steer clear of conflict in high-drama custody situations. That's understandable from a staff-relations standpoint. Habit does not create a legal requirement. If a school tells you it cannot proceed without your co-parent's signature, ask the special education director or the district's compliance officer to point you to the specific state or federal regulation that requires it. In nearly every case, they cannot, because no such regulation exists.
If the school refuses to move forward despite a signed consent from one parent, that refusal triggers the school's duty to provide prior written notice (PWN) explaining why it will not act.[4] Failing to provide that notice is itself a procedural violation under IDEA. You can file a state complaint with your state education agency, request mediation, or request a due process hearing to compel the evaluation.
What happens in a divorce or custody dispute: whose consent counts?
The parent with educational decision-making authority is the one whose consent counts. Divorce makes this messier in practice, though not in principle. Courts often address it directly in the custody order.[2]
If a custody order gives one parent sole legal custody, that parent holds the educational decision-making authority. Their consent alone is enough. If the order gives joint legal custody and specifically addresses special education, both attorneys' advice matters, because state family law interacts with federal education law in complicated ways.
When joint legal custody exists and the order says nothing about special education, most state education agencies and courts read IDEA to mean either parent can consent, and a school can rely on the first parent who signs. The U.S. Department of Education's Office of Special Education Programs (OSEP) has issued guidance consistent with this reading.[5] The school is not required to track down the non-consenting parent or wait for that parent to object.
If the other parent objects in writing after consent has already been given, the school generally does not have to stop. The dispute then belongs in family court, not on the IEP team's agenda. The school's obligation is to act in the child's educational interest, and a validly consented evaluation does exactly that.
Can one parent consent even if the other parent has said no?
Yes, in most cases, though the edges get complicated. IDEA does not give either parent a veto over the other's consent. If Parent A signs and Parent B has not signed or has flatly refused, the school's job is to proceed based on Parent A's consent, provided Parent A has legal authority to make educational decisions.[2]
The school is not the referee for which parent wins the disagreement. Its job is to follow IDEA and educate the child. If Parent B believes Parent A acted outside the scope of their legal authority, Parent B's remedy is family court, not a school that refuses to evaluate.
Some schools get nervous and pause when they know one parent is actively opposed. That caution can hurt the child by delaying an evaluation the law says must happen within 60 days of consent (or within the state's specified timeline).[1] If a school is stalling because of a parental dispute, put everything in writing and consider calling a special education attorney or your state's Parent Training and Information (PTI) center, which is a federally funded free resource.[6]
What is the school's timeline after consent is given?
Sixty days, in most states. Once a parent provides valid consent for an initial IEP evaluation, IDEA requires the school to complete the evaluation within 60 days, unless the state has set a different timeline.[1] Several states use 60 calendar days, some use 60 school days, and a handful use other windows. California uses 60 calendar days from receipt of consent.[7] New York uses 60 school days.
The 60-day clock is a hard federal floor. A school cannot stretch it just because it hopes the other parent will eventually sign. Consent has been given. The clock is running.
If the parent who gave consent fails to make the child available for assessment, or the child moves to a new district mid-evaluation, IDEA provides specific exceptions to the timeline.[1] A disagreement between two parents is not one of those exceptions.
| State | Evaluation Timeline After Consent |
|---|---|
| Federal floor (IDEA) | 60 days |
| California | 60 calendar days [7] |
| Texas | 60 calendar days |
| New York | 60 school days |
| Florida | 60 calendar days |
If your state is not listed here, ask your district's special education coordinator or check your state education agency website for the exact rule.
What is prior written notice and why does it matter to you?
Prior written notice (PWN) is one of the most useful tools IDEA hands parents, and most parents have never heard of it. Under 34 CFR § 300.503, any time a school proposes or refuses to take an action related to your child's evaluation, eligibility, or placement, it must give you written notice explaining what it is doing, why, and what options it considered.[4]
If a school refuses to proceed with an IEP evaluation because one parent has not consented, it has to put that refusal in writing. The PWN must describe the reason for the refusal and tell you about your procedural safeguards. This notice matters for two reasons. It creates a paper trail you can use if you file a complaint. And it often nudges schools to rethink a shaky position, because writing down an indefensible rationale focuses minds.
Always request PWN in writing. Send an email to the special education coordinator and copy the principal: 'I am requesting prior written notice regarding the school's decision not to proceed with [child's name]'s evaluation.' The school gets a reasonable time to respond, though IDEA does not set an exact number of days for delivering PWN after a request.
For a wider look at what an IEP is and how evaluations fit into the process, what does iep stand for and whats an iep give solid starting-point explanations.
What rights do parents have if the school still refuses to evaluate?
You have three formal options under IDEA if a school refuses to evaluate after valid consent. Each one is free or low-cost to start.
First, file a state complaint with your state education agency. A state complaint must be filed within one year of the alleged violation and must describe the facts.[8] The state must investigate and issue a written decision within 60 days. This route is free, faster than due process, and often effective when the violation is clear-cut, as a wrongful refusal to evaluate usually is.
Second, request mediation. Mediation is voluntary, free to parents, and confidential.[8] A trained, neutral mediator helps both sides reach an agreement. It works well when you want to keep the relationship with the school intact and think the dispute comes from confusion rather than bad faith.
Third, request a due process hearing. This is the most formal route, essentially a legal proceeding before an impartial hearing officer. The timelines are strict and the procedures are complex, so get a special education attorney if you go this way. Many attorneys take these cases on contingency because IDEA allows attorney fee recovery when parents prevail.[9]
Your state's PTI center can walk you through all three at no cost. Find yours at the Center for Parent Information and Resources (CPIR).[6]
How does this differ from consent for an IEP meeting versus an IEP evaluation?
Consent means different things at different stages, and the distinction is worth getting precise about.
For the initial evaluation, one parent's written informed consent is required before the school can begin assessing the child.[1] No consent, no evaluation, no exceptions.
For an IEP meeting after the evaluation, IDEA does not require parental consent to hold the meeting. The school must make reasonable efforts to schedule it at a mutually agreeable time and must notify parents in advance. If parents do not attend despite good-faith efforts, the school can hold the meeting without them.[3]
For an initial IEP (putting the plan into effect for the first time), the school must again get written informed consent from a parent before providing special education and related services.[1] One parent signing is enough.
For annual IEP reviews, reevaluations, and changes to an existing IEP, the rules vary. Reevaluations require consent unless the parent fails to respond after reasonable attempts.[1] Changes to IEP services without a full meeting can sometimes be made by written agreement, with one parent's signature.
If you are sorting out the difference between an IEP and a 504, the iep vs 504 comparison breaks down which children qualify for which plan and what each one requires.
What should a parent do right now if their school is asking for both signatures?
Start with a clear, documented ask. Email the special education director (more than the classroom teacher) and say something like: 'I am writing to provide my consent as [child's name]'s parent for the initial special education evaluation requested on [date]. Please confirm receipt and the start of the 60-day evaluation timeline. If you believe both parents must consent, please send me the specific regulatory citation for that requirement and a prior written notice explaining the refusal.'
That email does several things at once. It timestamps the start of the 60-day clock. It tells the school you know your rights. It demands a regulatory citation they probably cannot produce. And it requests PWN, which the school has to provide.
If you do not get a response within five business days, escalate to the district's special education director or the district's legal office. Write down every conversation: the date, who you spoke to, and what they said.
The ReadFlare parent advocacy kit includes editable template letters for exactly these situations, including the consent confirmation email and the PWN request, plus a checklist of your procedural safeguards under IDEA.
Parent Training and Information centers are free and genuinely helpful. They are not lawyers, but they know IDEA and they know your state's specific rules, which matters because state-level procedural rules do vary.[6]
Does it matter if the child is covered under a 504 plan instead of an IEP?
Yes. The rules differ for 504 plans because Section 504 of the Rehabilitation Act of 1973 is a different law with different procedural requirements.[10]
Section 504 does not carry the same detailed procedural safeguards as IDEA. The U.S. Department of Education's Office for Civil Rights (OCR) enforces Section 504 in schools, and OCR's regulations require parental notice before evaluation and before placement in a 504 plan. The consent standard is less explicit than IDEA's.[10] Some districts read this as requiring only notice (not active written consent), while others ask for consent as a best practice.
Because the 504 consent rules are less prescriptive at the federal level, state and district policies vary more widely. Ask your school exactly what its 504 evaluation consent policy is and whether it requires one signature or two. If it demands two and cannot point to a specific legal basis, push back using the same logic as with IDEA: show the regulatory text, or make them show you the policy.
For a full explanation of how 504 plans work in school, 504 plan school walks through the process from request through implementation.
What if your child's reading struggles are why you are requesting the evaluation?
Reading difficulties are the most common reason families ask for a special education evaluation. Dyslexia, a language-based learning disability that affects decoding and phonological processing, is estimated to affect 15 to 20 percent of the population, according to the International Dyslexia Association.[11] Many of those children are not identified until third grade or later, long after intervention would have done the most good.
IDEA requires that an evaluation for a suspected learning disability draws on multiple sources of data, includes assessments in all areas of suspected disability, and gathers input from parents, teachers, and specialists.[1] For a child with reading struggles, that usually means testing phonological awareness, rapid automatized naming, reading fluency, reading comprehension, and language processing.
Schools cannot use a single test score as the sole basis for eligibility, and they cannot use lack of instruction as the reason a child does not qualify.[1] If a child was never taught with evidence-based reading instruction and is behind because of it, the school still has to evaluate whether an underlying disability exists.
The science on early reading intervention is clear: structured literacy grounded in phonics and phonological awareness shows the strongest outcomes for children with dyslexia and related reading difficulties.[12] Evaluation is the doorway to those services. Do not let a fight over who signs the consent form block your child from walking through it.
Frequently asked questions
Can a school require both parents to consent for an IEP evaluation?
No. IDEA (34 CFR § 300.300) requires consent from 'the parent,' defined in the singular. One parent who holds educational decision-making authority can provide valid consent. The school cannot lawfully refuse to evaluate solely because a second parent has not signed. If it does refuse, demand a prior written notice citing the specific regulation that requires dual consent.
Can a school do an IEP assessment with only one parent's consent?
Yes. Federal law is explicit: one parent's informed written consent is all that IDEA requires before an initial evaluation begins. This applies in intact two-parent families as well as separated or divorced families. Once valid consent is received, the 60-day evaluation clock starts, and the school must proceed.
What if my ex has sole custody: does that change who can consent?
Yes, custody matters. The parent with educational decision-making authority is the one who can consent. If one parent has sole legal custody, their consent alone is valid. If you share joint legal custody, either parent can generally consent under IDEA's definition. Check your custody order and consult a special education attorney if the order is ambiguous.
What if the other parent objects to the IEP evaluation after I already consented?
IDEA does not give the non-consenting parent a veto once valid consent has been given. The school can proceed. If the objecting parent believes consent was given outside the scope of legal authority, their remedy is family court. The school is not required to pause or cancel an evaluation due to a parental dispute about decision-making rights.
How long does the school have to complete the evaluation after I sign consent?
IDEA sets a federal floor of 60 days from receipt of consent. Some states specify 60 calendar days, others use 60 school days, and a few use different windows. California uses 60 calendar days; New York uses 60 school days. Check your state education agency's website for the exact rule in your state.
What is prior written notice and do I need it if the school refuses to evaluate?
Prior written notice (PWN) is a written explanation the school must provide any time it refuses to take an action you have requested, including refusing to evaluate. If the school declines to proceed because one parent has not consented, it must give you PWN citing its legal basis. Request it in writing. A school that cannot cite a real regulation will often reconsider quickly.
Can I file a complaint if the school refuses to evaluate my child after I consented?
Yes. You can file a state complaint with your state education agency, which must investigate and resolve it within 60 days. Filing is free. You can also request mediation (free, voluntary, confidential) or a due process hearing. Your state's Parent Training and Information center can help you choose the right path and prepare your complaint at no cost.
Does the school need both parents to consent to the IEP itself, or just the evaluation?
Only one parent's consent is needed at each stage. One parent can consent to the initial evaluation. One parent can consent to the initial provision of special education services (placing the IEP in effect). Annual reviews do not require new consent. Reevaluations require consent unless the parent fails to respond after documented reasonable attempts.
Is the consent rule for a 504 plan evaluation different from an IEP evaluation?
Yes. Section 504 regulations under the Rehabilitation Act require parental notice before evaluation but are less explicit than IDEA about requiring active written consent. Because 504 procedural rules are less detailed federally, district and state policies vary more. Ask your school for its written 504 consent policy and challenge any dual-consent requirement that lacks a specific legal basis.
What if the school says its district policy requires both parents to sign?
District policies cannot override federal law. IDEA preempts any local policy that contradicts its minimum requirements. If a district policy requires dual consent for an IEP evaluation, that policy conflicts with 34 CFR § 300.300 and § 300.30 and is unenforceable. Ask the district to cite the federal or state authority that permits the stricter policy. In almost every case, none exists.
Where can I find a free advocate or legal help with IEP consent issues?
Your state's Parent Training and Information (PTI) center is the first call to make. PTI centers are federally funded, free, and staffed by people who know your state's special education rules. Find yours at the Center for Parent Information and Resources (parentcenterhub.org). For legal disputes, many special education attorneys offer free consultations, and IDEA allows attorney fee recovery if you prevail.
Can a school stop the evaluation partway through if one parent withdraws consent?
Yes. If the parent who gave consent later revokes it in writing before the evaluation is complete, the school must stop. But the other parent cannot revoke consent given by the first parent; only the consenting parent can withdraw. If consent is revoked after an IEP has been implemented, the school is not required to amend the child's records or provide retroactive services.
Does parental consent apply to every type of assessment in the IEP process?
Consent is specifically required for the initial evaluation and for any reevaluation when additional testing will be conducted. It is not required for annual IEP team meetings or for reviewing existing data without new testing. However, the school must notify parents and make reasonable efforts to include them in any meeting that reviews evaluation data or makes eligibility or placement decisions.
Sources
- U.S. Department of Education, IDEA Regulations 34 CFR Part 300: IDEA requires informed consent from 'the parent' (singular) before initial evaluation; evaluation must be completed within 60 days of consent; single test scores cannot be the sole basis for eligibility.
- U.S. Department of Education, IDEA Regulations 34 CFR § 300.30 (definition of parent): IDEA defines 'parent' to include any one natural parent, adoptive parent, guardian, or individual acting in the place of a parent, meaning one person meeting the definition can give valid consent.
- U.S. Department of Education, Individuals with Disabilities Education Act overview: States may add procedural protections above IDEA's minimums but cannot subtract from them; IEP meetings may proceed without parents if the school makes good-faith documented efforts.
- U.S. Department of Education, IDEA Regulations 34 CFR § 300.503 (prior written notice): Schools must provide prior written notice whenever they propose or refuse to take an action related to evaluation, eligibility, or placement, including a refusal to evaluate.
- U.S. Department of Education, Office of Special Education Programs (OSEP): OSEP guidance is consistent with the reading that either parent with educational decision-making authority may consent when joint legal custody exists and the custody order is silent on special education.
- Center for Parent Information and Resources (CPIR), parentcenterhub.org: Federally funded Parent Training and Information centers provide free assistance to families on IDEA rights, state complaints, mediation, and due process.
- California Department of Education, Special Education Timelines: California uses a 60-calendar-day timeline from receipt of parental consent for completion of the initial special education evaluation.
- U.S. Department of Education, IDEA Regulations 34 CFR §§ 300.151-300.153 (state complaints) and § 300.506 (mediation): Parents may file a state complaint within one year of a violation; the state must resolve it within 60 days. Mediation is free, voluntary, and confidential.
- IDEA Section 615(i)(3), attorney fees provision: IDEA allows courts to award reasonable attorney fees to parents who are the prevailing party in due process or civil proceedings.
- U.S. Department of Education, Office for Civil Rights, Section 504 of the Rehabilitation Act: Section 504 regulations enforced by OCR require parental notice before evaluation and placement but the consent standard is less explicit than IDEA's.
- International Dyslexia Association, Dyslexia Basics fact sheet: The International Dyslexia Association estimates dyslexia affects 15 to 20 percent of the population.
- National Reading Panel (NICHD), Teaching Children to Read report: Systematic phonics instruction and phonological awareness training show the strongest outcomes for children with reading difficulties and dyslexia; this reflects the structured literacy evidence base.