Your child's IEP has a section called "accommodations and modifications." The list reads: extra time, small-group testing, simplified assignments. You nod at the meeting. At home, you realize you are not sure which of those changes how your child learns and which changes what your child is expected to learn.

The two words get used as if they meant the same thing. They do not, and the difference can matter for what your child is taught, how progress is measured, and sometimes what comes later. This guide explains the difference in plain words, with examples from a state education agency.

The simple version

Texas's special education support site gives a clean definition of each.

Accommodations change how a student learns or shows what they know. They are meant to give the student access to the general education curriculum. They reduce or remove the effects of a disability on tasks such as reading, writing, or testing, but they do not change what the student is expected to learn. The objectives of the course or activity stay the same.

Modifications change what the student is expected to learn. This usually means the student will not master all of the grade-level content and may be given or assessed on simpler or less complex tasks. The aim is to let the student progress in the general curriculum at a different level.

A quick way to hold it: accommodations change the path. Modifications change the destination.

Four kinds of accommodations

Texas's guidance groups accommodations into four types.

Four types of accommodations
TypeWhat it changesExamples
PresentationHow information and directions are givenDirections read aloud, large print, a graphic organizer
ResponseHow the student records or shows workSpeaking an answer, using a keyboard, a word bank
Timing and schedulingWhen, and for how longExtra time, breaks, tasks split into parts
SettingWhere, and the conditionsA quieter room, small-group seating, a seat near the teacher

Setting accommodations are generally not modifications, since they do not change what the student is expected to learn.

The same support can be either one

This is the part that surprises many parents. Whether a support is an accommodation or a modification depends on what the assignment is meant to measure. Texas's guidance gives examples.

One support, two possible meanings
SupportLikely an accommodation whenLikely a modification when
Spell-checkThe goal is to write a three-paragraph essayThe goal is to show mastery of spelling rules
Text-to-speechThe goal is to learn grade-level science contentThe goal is to show grade-level reading comprehension
CalculatorThe goal is to solve multi-step word problemsThe goal is to show multiplication with regrouping
Extra timeThe goal is to show understanding of contentThe goal is to show fact fluency on a timed quiz

So a list of supports on an IEP does not tell you, by itself, which are which. It depends on the task. That is a good reason to ask.

What the IEP has to say

Federal rules require the IEP to state the special education and related services and the supplementary aids and services to be provided to your child or on your child's behalf. It must also state the program modifications or supports for school personnel that will be provided, so your child can advance toward the annual goals, take part in the general curriculum, and be educated with peers. Supplementary aids and services are defined as aids, services, and other supports provided in regular education classes and other settings.

The rule also says that each teacher and provider who carries out the IEP has to be told their specific responsibilities and the specific accommodations, modifications, and supports that must be provided. If your child's teacher does not seem to know what is on the list, that is worth raising. See who is on the IEP team.

Why the difference matters

  • What is taught. Modifications change the learning target. Your child may be working on different content from classmates.
  • How progress is measured. Texas's guidance says that when there are modifications to what the student is learning in the grade-level curriculum, the committee in that state must write an annual goal for the modification. Other states handle this differently, so ask how your state does.
  • Later options. In some states, modified work can affect diploma choices. This guide does not state your state's rule. Ask the team how modifications connect to your child's path.
  • Expectations. A modification is not a bad thing when a child needs it. It is a decision that should be made with you, with reasons, and reviewed regularly.

Questions to ask at the meeting

For more questions, see questions to ask at an IEP meeting. If a goal on the IEP is too vague to measure, see what to ask when IEP goals are too vague.

Checking the list at home

Once a term, read the list again with your child's work in front of you.

  • Are the supports being used in the classes where they are written?
  • Does your child know how to use them?
  • Does the work come back marked in a way that shows the support was available?
  • Does a support still fit now that your child has grown or the work has changed?

If something is not working, write to the case manager with a specific example and the date, and ask for it to be reviewed.

Common mix-ups

  • Calling every support a modification. Most classroom supports are accommodations.
  • Assuming a support is the same in every class. It depends on what the task measures.
  • Assuming that modifications are temporary. They can last, which is why they should be reviewed.
  • Not asking who provides the support. An item with no owner often goes undone.

Terms are in the glossary.