Leamington District Secondary School (LDSS) is a public high school in Leamington, Ontario. Home of the Lions, it has an enrollment of approximately 950 students. In 2018 LDSS became an IB World School authorized to offer the Diploma Programme. LDSS feeder schools are located throughout Leamington and neighbouring town Wheatley, Ontario. This includes: Queen Elizabeth Public School, Gore Hill Public School, Margaret D. Bennie Public School, Mt. Carmel-Blytheswood Public School and East Mersea Public School.