I don't know either. Here is what I wanted for DS:
--a behavior plan
--work with resource teacher during study hall on organizational issues
--language evaluation. I am not convinced he doesn't have an LD in receptive/expressive language. He definitely has a pragmatic deficit, and it's caused a lot of misunderstanding.
--legal protection from discrimination
A 504 can provide him with a behavior plan and legal protection from discrimination.
An IEP is necessary for resource room support (leaving the general education setting, or receiving any intervention not otherwise accessible to general education students; specialized instruction).
Neither is necessary for a speech/language evaluation per se, but an IEP is necessary for services.
