You are definitely going to want to look into IDEA as well as the amendments to it in 1997. In my opinion, inclusion classroom settings are a fantastic opportunity for all students. It does require a certain, very special type of teacher, however, who is right for the role, and if said teacher is not properly placed, the program has a strong possibility of falling on its face. In my experience, students enjoy assisting the children with disabilities in their classrooms, both academically and socially, at a younger age, K - 5 or so. In the high school setting, it's a much thinner line you walk, trying to keep the students as mainstreamed as possible, keeping their social interaction high and not outcasting them, though as we all know, kids tend to get more judgmental and vocal about their judgments as journey towards young adulthood. In my opinion, at the elementary level it is a must, and at the high school level, given the right circumstances it can work, though I've seen it go both ways. Keep in mind it also depends on the disabilities you're talking about, from mental to physical to emotional, with varying degrees.