I just checked out www.wrightslaw.com and found this:
"A Free, Appropriate Public Education Under Section 504

Does Section 504 require schools to provide the child with an appropriate public education?

Yes. Under Section 504, an "appropriate" education means an education that is comparable to the education provided to students without disabilities. This may include regular or special education services. Students can receive related services under Section 504 even if they are not provided with special education services." http://www.wrightslaw.com/howey/504.idea.htm

You might want to surf that page and see if you can find out more. HTH.