Gilmour Academy is an independent, Roman Catholic, coeducational, college-preparatory day and boarding school in the Cleveland suburb of Gates Mills, Ohio. Founded in 1946 by the Brothers of Holy Cross, it offers a Montessori preschool program through grade 12. A boarding program is available to students in grades 7–12. Gilmour Academy is chartered through the state of Ohio; accredited through the Independent School Association of Central States (ISCACS) and a member of the National Association of Independent Schools (NAIS), the Ohio Association of Independent Schools (OAIS), and the Coalition of Essential Schools (CES).