When the school doesn't honor the IEP... what then?

I've never been there myself, but if I were having this issue, I'd bring it up at a school board meeting. You're right--there SHOULD be more resources for students with Asperger's. If I really tried and couldn't get the school to do more for my child, I'd consider another school with a better system or even homeschooling, depending on the child's age and level of functioning.