An IEP or 504 Plan addresses your child’s needs in the K-12 educational program. Postsecondary education is a totally different arena. Almost everything about the postsecondary system is different from what you’ve experienced before. This includes how a college may address your child’s needs for accessing its educational program and the information it needs to accomplish this. While the IEP or 504 Plan may provide the disabled student services office with some of what it will need, additional information may be required.
(https://www.ahead.org)