Cleveland Junior Naval Academy (also known as Cleveland High School) was a magnet military academy high school in St. Louis, Missouri and was a part of the St. Louis Public Schools.

[2] In 2006, the school moved from its original location on Louisiana Avenue (38°34′40″N 90°14′34″W / 38.5777°N 90.2429°W / 38.5777; -90.2429) to the Pruitt Military Academy building on North 22nd Street, then, in 2010, it moved from Pruitt to the Southwest High School building at Arsenal and Kingshighway.

[4] As a Navy Junior Reserve Officers' Training Corps NJROTC unit, cadets were offered many experiences that were only offered through the NJROTC program.

For the 2011–2012 school year, the school offered 17 activities approved by the Missouri State High School Activities Association (MSHSAA): baseball, boys and girls basketball, sideline cheer leading, boys and girls cross country, 11-man football, boys and girls soccer, softball, boys and girls tennis, boys and girls track and field, girls volleyball, wrestling, and speech and debate.

[5] In addition to its current activities, Cleveland students have won several state championships, including: The school also has produced two individual wrestling state champions.