To qualify for a 504 plan, a student must have a physical or mental impairment that substantially limits one or more major life activities, such as learning, reading, concentrating, or breathing. That is the only legal test. Unlike an IEP under the Individuals with Disabilities Education Act, a 504 plan does not require the student to fall into a specific disability category or need specialized instruction. The bar is broader, which means many students who do not qualify for an IEP can still receive formal accommodations through Section 504 of the Rehabilitation Act.
The Three-Part Eligibility Test
Every 504 eligibility decision comes down to three questions. First, does the student have a physical or mental impairment? This includes diagnosed conditions like ADHD, anxiety disorders, diabetes, asthma, epilepsy, dyslexia, depression, food allergies, and chronic illnesses. The law does not list specific qualifying diagnoses. Any documented impairment can count.
Second, does that impairment affect a major life activity? Federal guidance defines major life activities broadly: learning, reading, thinking, concentrating, communicating, seeing, hearing, eating, sleeping, walking, breathing, and caring for oneself all qualify. So do major bodily functions like immune system function, digestion, and neurological function.
Third, is the limitation substantial? The student does not need to be failing classes or in crisis. A substantial limitation means the impairment meaningfully restricts the student’s ability to perform a major life activity compared to most students the same age. A child with ADHD who can pass tests but needs significantly more effort to focus than peers, for example, may still qualify.
One critical rule: when the school evaluates whether the limitation is substantial, it must ignore the benefits of any mitigating measures the student already uses. If your child takes medication for ADHD or uses an inhaler for asthma, the school must assess how the condition affects them without that treatment. The only exception is ordinary eyeglasses or contact lenses, whose corrective effects can be considered.
How a 504 Plan Differs From an IEP
An IEP requires that a student fit one of 13 specific disability categories under IDEA, that the disability negatively impacts educational performance, and that the student needs specialized instruction. A 504 plan has none of those additional requirements. The student simply needs a disability that substantially limits a major life activity. Because of this lower threshold, students who are turned down for an IEP often still qualify for a 504 plan. The trade-off is that a 504 plan provides accommodations (extra time on tests, preferential seating, modified assignments) rather than the individualized specialized instruction and related services an IEP can deliver.
How to Request an Evaluation
Any parent or guardian can request a 504 evaluation in writing. Teachers, school counselors, and other staff can also refer a student, but a parent request is the most direct path. Address your written request to the school’s 504 coordinator, typically someone in the front office or the district’s student services department. Describe your child’s condition, how it affects them at school, and ask that the school evaluate your child for eligibility under Section 504.
The school district must obtain your consent before beginning the evaluation. Federal law requires an individual evaluation before classifying any student as having a disability or providing services. There is no single federal deadline for how quickly the school must complete the evaluation, but most districts have internal timelines, often 30 to 60 school days from the date of your request. Ask your school’s 504 coordinator for the local timeline so you can follow up if it stalls.
What the Evaluation Looks Like
The school is required to draw from multiple sources of information to minimize the chance of error. All significant factors related to your child’s learning process must be considered. In practice, this means the evaluation team may review:
- Medical documentation: A diagnosis from your child’s doctor, psychologist, or psychiatrist that identifies the impairment and describes its severity.
- Aptitude and achievement tests: Standardized test scores, classroom assessments, or psychoeducational testing that shows how the impairment affects academic performance.
- Teacher recommendations: Input from current and past teachers about your child’s behavior, attention, participation, and academic progress.
- Physical condition: Health records, attendance data showing absences related to the condition, or nurse visit logs.
- Social and adaptive behavior: Observations about how your child interacts with peers, manages daily school routines, and adapts to the classroom environment.
You do not need to provide all of these yourself. The school is responsible for conducting the evaluation. That said, bringing a doctor’s letter that clearly names the diagnosis and explains how it limits your child at school strengthens the case considerably. A vague note that says “student has ADHD” is less useful than one that explains “this student’s ADHD substantially limits their ability to sustain attention during classroom instruction and complete timed assessments.”
Who Decides Eligibility
The eligibility decision is not made by a single administrator. Federal regulations require that a group of people make the determination, including individuals who are knowledgeable about the meaning of the evaluation data and familiar with the available placement options. In most schools, this team includes the 504 coordinator, one or more of the student’s teachers, a school counselor or psychologist, and the parent. You have the right to participate in this meeting.
The team reviews all the collected information and decides two things: whether your child has a qualifying disability under Section 504, and if so, what accommodations should be put in place. If your child qualifies, the team creates a written 504 plan that lists the specific accommodations your child will receive. Common accommodations include extended time on tests, breaks during long assignments, seating near the front of the classroom, permission to use audio recordings, modified homework loads, and access to a quiet testing room.
What to Do if the School Says No
If the team determines your child does not qualify, you have options. School districts are required to provide procedural safeguards, which means they must notify you of the decision and inform you of your right to challenge it. You can request an impartial hearing to dispute the finding. This is a formal process where you can present evidence, including independent evaluations you obtained on your own, and argue that your child meets the eligibility standard.
You can also file a complaint with the U.S. Department of Education’s Office for Civil Rights (OCR) if you believe the school did not follow proper evaluation procedures or discriminated against your child. OCR investigates Section 504 complaints at no cost to the parent. Before going that route, though, it often helps to request a meeting with the 504 team to ask specifically why the student was denied and what additional documentation might change the outcome. Sometimes the issue is simply that the medical documentation was too vague or the school did not have enough information about the impact on daily school life.
Keeping a 504 Plan Current
Schools are required to conduct periodic re-evaluations of students with 504 plans. There is no fixed federal schedule, but most districts review plans annually and conduct formal re-evaluations every three years. If your child’s condition changes, you can request a re-evaluation at any time. You can also request changes to the accommodations if the current ones are not working.
If your child transfers to a new school district, the receiving district must review the existing 504 plan and supporting documentation. If the new school’s team agrees the plan is appropriate, they are required to implement it. If they believe changes are needed, they must conduct their own evaluation before making modifications. Bring a copy of the current 504 plan, the original evaluation documents, and any medical records with you to the new school so there is no gap in accommodations while the review takes place.