Private K-12 schools are sometimes criticized for accepting only those students most likely to succeed academically, and for leaving the most difficult-to-educate children to the public school system. Is this true? The diversity of private schools includes those that serve exclusively at-risk, incarcerated, or disabled children. The report describes private schools that educate each of these populations, reviews how public schools are contracting with private schools to serve difficult-to-educate students, examines policy implications including cost and school choice, and presents six case studies of Michigan private schools that serve exclusively students with special needs. 71 page