sentences:  The student body is "primarily middle- and upper-class white suburban children", and students "come from some of the most affluent families" in Chicago's western suburbs, but thirty percent of the students are non-white.Tuition for kindergarten through group eight was $23,950, junior kindergarten was $11,700, and early childhood $6,200 in 2018.The Annual Giving Fund makes up 3.5 percent and the Annual Auction another 5 percent of the operating budget ($5.9 million in 2008–2009).