The Center for American Progress has put out an analysis of the role disability plays in suspensions. It confirms what we broadly know, but makes the data case strongly and usefully:
Too many young children with disabilities and social or behavioral difficulties are currently living a version of Isaiah’s harrowing early learning experience. According to new data, children ages 3 to 5 with disabilities and or emotional and social challenges, while comprising just 12 percent of early childhood program populations, represent 75 percent of suspensions and expulsions. The odds of being suspended or expelled are more than 14.5 times higher for children with disabilities and emotional challenges than for their typically developing peers. (see Appendix)