Having just set up a 504 for my child entering kindergarten, it was the principal who set it up along with the nurse. He goes to a public school. A 504 is a plan with modifications to what your child can do,but also other students. For example my child is airborne allergic to peanuts/tree nuts. In the morning we decided instead of going in the all purpose room he will have to wait in the nurses room until he goes to class. The same for the afternoon, instead of his bus room he has to wait in...