K-12. The Spence School is an independent college-preparatory day school for girls in kindergarten through grade 12. Founded by Clara B. Spence in 1892, Spence is committed to maintaining high academic standards, promoting diversity and teaching the basic human values of honesty and concern for others. With approximately 600 students, Spence is a small supportive community where the contributions of every student are valued. Each student is challenged to reach her full potential in an atmosphere that fosters self-confidence and a spirit of cooperation.