Thomas Jefferson School 4100 S Lindbergh Blvd, Saint Louis, MO63127 This private boarding and day school is located on 20 acres in Sunset Hills. It admits about 88 students from grades 7…More through 12. Originally a boys' school when it first opened in 1946, it is now co-ed. Students study Greek and Latin, along with standard college-prep courses. The campus is made up of several Tudor-style buildings, which include cottages, tennis courts, an art barn, and a gym, just for starters. Typically, students hale from a number of states and countries. Expect to pay customary private school rates.