Gateway High School (GHS) serves the residents of Monroeville and Pitcairn, Pennsylvania.

It is part of the Gateway School District and serves grades 9 through 12.

Gateway High School was built in 1958 and dedicated on November 15, 1959.

[4] Gateway High School is a member of the Pennsylvania Interscholastic Athletic Association (PIAA)[5] and the Western Pennsylvania Interscholastic Athletic League (WPIAL), District 7.

[6] The mascot of the school district is the Gateway Gator, a stylized alligator.