United States Military Academy Preparatory School was created in 1947.
Naval Academy Preparatory School was created in 1915.
The United States Air Force Academy Preparatory School was established in 1961.
Pilgrims Pre-Preparatory School was created in 2000.
Meadowbrook Preparatory School was created in 1960.
Staines Preparatory School was created in 1930.
Briggs Preparatory School was created in 1975.
Sandia Preparatory School was created in 1966.
Iona Preparatory School was created in 1916.
Edison Preparatory School was created in 1954.
Diliman Preparatory School was created in 1969.
Pinewood Preparatory School was created in 1952.
Worcester Preparatory School was created in 1970.