There are some defined norms by the respective federal state government to qualify under Section 504 for the person suppose to suffering from ADD. There are some defined criteria to qualify under the section 504 such as person who are either mental disability or physical disability to perform any types of work like learning or any types of odd behaviors or such types of records in the health center or at school get reported. It is essential to get the proper certification from the medical or health department to prove the disabilities to qualify under Section 504.
There are many factor responsible for qualifying for higher education under Section 504. Apart from that you can also try to see the IDEA and also see the special education and the law for the ADHD child on the Children and Adults with Attention Deficit Disorders on many website on ADD. Under Section 504 you child gets special facilities as defined under the law.