Federal laws which impact schools include, but are not limited to, the ADA, Section 504 and the IDEA. The ADA and Section 504 also cover employment (so teachers and staff). Recently, the ADA was amended. A great article on the web about the changes to the ADA and how this impacts schools can be found at:
http://www.casecec.org/pdf/ADA%20Amendment%20Explanation%2012-14-08–Sue%20Gamm.pdf