peaches, I don't currently, but I used to be an assistant at a "non-public theraputic day school for students with autism"
The biggest difference I see between what we did there and what I do now is that they have more specialists specifically for children with those particular needs. My district shares an OT between all the schools, so, although she's available by email quite often, she's really only "Available" when she's scheduled to be in your room/with thos kids. There, although our kids had scheduled times as well, they got a lot MORE therapy and the therapists were more available if needed to help manage a situation (1 OT and 3 OTA's for 30 kids... 2 music theapists and 2 interns... 4 SLP's... etc).
Basically the other diference is that I was bound by a lot less policy "this isn't how we do it" working there... on the other hand, my kids didn't have exposure to typical kids, which many of them needed (they did phase in inclusion on a per-child basis as appropriate)... but here i have assemblies, all-school activities, etc that, while appropriate for the "typical" kids, aren't necessarily appropriate for my kids. My school allows me the flexibility to skip events if they aren't appropriate, not all school accept that.
We're outplacing one of my kids next year to a school developed for kids w/ special needs, and a program specifically designed for kids with autism... they're really able to provide for him SO much more support than I can give within the public school setting... most therapy time, a wider variety of theapies, and more specialists (I have to schedule an AT consult weeks or months in advance, they have one on site).
CUrriculum, I would guess, would vary greatly from school to school. At the one I worked at, we used a HUGE variety of things, tailored for each child because what each kid needed was very different... but, in conjunction (sometimes) with the kid's home school district, the teachers were able to pick their own curriculum materials, as long as we were able to show that we cover the standards (portfolio-based alternative assessments were the norm for kids of standardized-testing age).
I don't know if that answered your question or not