Leaderboard

I'm actually involved in a similar situation right now where the pursuance of both is happening at once. I recommend going ahead and pursuing the 504 now. It is generally better for medical-related issues if there isn't any real academic worries.

IMO, defiant behavior warrants an FBA so the school can develop a PBSP/BIP and teach him to be less defiant. Your child needs to learn to work with all types of teachers. He might need to be taught this - specially designed instruction. Conversely, teachers need to work with all types of students. They are all different so different approaches might need to be used so their approach doesn't trigger his defiance. I'd request that both teachers attend the IEP meeting. You want the one that's good with him to work with the one that's not so they can be taught to use an approach that triggers cooperation & not defiance.