Cranbrook Schools is a private college prep boarding school located in Bloomfield Hills, Michigan, near Detroit. The schools are comprised of three schools; an elementary school with a private preschool, a middle school with a distinct boys middle school and girls middle school along with a co-ed college prep private boarding high school. Cranbrook is regarded as one of the top private schools in Michigan. Many of Cranbrookâs boarding school students attend top universities and colleges.