18:32 here. Need to be a bit quick. I'll extrapolate later on this, I promise, but one HUGE difference between this and elementary is that a great deal of the work is online. This has benefits and downsides, naturally. Much more of the work is project based, and dare I say, interesting.
My child had one altercation with another kid this year who happened to be in the comprehensive program, but it wasn't the mix of the two populations that was the issue. I will also say that every grownup involved, from school personnel to the other kid's parents, handled it EXACTLY like one hopes they would, and we're OK with how it shook out. The kids mix at lunch, on the bus, in PE, I think in some things like band, and generally it's not an issue. At least as far as my child reports it.
I have much more to say, but I have to run.