Hi Jen8,
I would ask that question of the school district, whatever person is in charge of Intervention Services.
In our district, the kids with disabilities that affect education most strongly are typically clustered: all the deaf kids are mainstreamed at one particular elementary, the autistic kids at another. I am not recommending this practice; but suggesting that if that's the case where you are, you want to find the middle school fed by the place where the elementary autistic students are clustered.
I would not want my child with autism in an ED program; the needs are different.
Do you have a private therapy team who can advise on school placement? We bring ours to all meetings. It has helped ensure appropriate placements.
Is there a local parent support group? Or an advocate who has worked with a lot of people in your district? Both of those could help you get the lay of the land of what's "typically done" and what's possible.
HTH,
DeeDee