School & IEP

Understanding the Difference Between an IEP and a 504 Plan

These two school plans come up constantly and are easy to mix up. This guide compares them in plain language and explains why a diagnosis alone does not decide which one a student gets.

Last reviewed: August 31, 2026

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Quick answer

Both an IEP and a 504 plan are written school plans meant to help a student with a disability at school, and both are developed by a school team that includes the parent or guardian. They come from different laws and they do different things.

In plain language: an IEP is generally about specially designed instruction and services, while a 504 plan is generally about accommodations that give a student access to the school program.

Side-by-side comparison

IEP504 plan

Governing law
IEP
Individuals with Disabilities Education Act (IDEA)
504 plan
Section 504 of the Rehabilitation Act
Main purpose
IEP
Provides specially designed instruction and related services
504 plan
Provides access through accommodations and removal of barriers
Eligibility
IEP
Student is determined eligible under one of the disability categories and needs special education
504 plan
Student has a disability that substantially limits a major life activity
What the plan includes
IEP
Measurable goals, special education services, related services, accommodations and modifications
504 plan
Accommodations and supports; typically no specialized instruction goals
Goals
IEP
Written, measurable annual goals with progress monitoring
504 plan
Generally does not include measurable annual goals
Review
IEP
Reviewed at least once a year; re-evaluation on a set cycle
504 plan
Reviewed periodically by the school's 504 team

A diagnosis by itself does not decide the plan

Many families are surprised by this. Having a medical or clinical diagnosis does not automatically mean a student gets an IEP, and not having a diagnosis does not automatically rule out support at school.

Eligibility for either plan is determined by the school team, using evaluation information and the applicable requirements, based on how the student is affected at school. Vicabell cannot tell you which plan a student qualifies for.

Examples of supports families often see

These are common examples only. What is actually included is decided by the school team for the individual student.

Often discussed with a 504 plan:

Extra time on tests or assignments
Preferential seating
Breaks during the day
Written or visual directions in addition to spoken ones
Health-related supports during the school day

Often discussed with an IEP:

Specially designed instruction in specific areas
Related services such as speech, occupational or physical therapy
Measurable annual goals with progress reporting
Program modifications and specialized settings when appropriate
Accommodations, which can also be part of an IEP

Questions you can ask the school

Which plan type is being considered for my child, and why?
What information is that recommendation based on?
What would each option include in practice?
How will progress or effectiveness be checked?
How often will the plan be reviewed?
Who do I contact if something in the plan is not happening?
Can I get the explanation and next steps in writing?

Official New Jersey resources

https://www.nj.gov/education/specialed/

https://www.nj.gov/education/specialed/parents/

Visit NJDOE Office of Special Education Parent & family resources

What to read next

School & advocacy resources

Last reviewed: August 2026

Vicabell provides educational resource information only and is not a school district, legal service or advocacy organization. Vicabell is not affiliated with the New Jersey Department of Education. Requirements and district procedures can change — confirm current information with your school district and the New Jersey Department of Education.