Rainier Beach High School is a public secondary school in the Seattle Public Schools system. It is located in the Rainier Beach area, in the southeastern part of the city of Seattle, Washington, United States. The school historically has had a strong emphasis on team sports, and many championship teams. The building has a capacity of 1,200 students, but enrollment has declined greatly in recent years. In 2006, 1,302 of the 1,600 high school students living in the Rainier Beach neighborhood traveled out of the area each morning to attend other high schools. In 2008–09, Rainier Beach began the year with 453 students and ended with about 295, giving an average monthly enrollment of 374. Sixty students chose it as their first choice. In 2013 the school began offering an International Baccalaureate program.

Seattle Public Schools is the largest public school district in the state of Washington. The school district serves almost all of Seattle. Additionally it includes sections of Boulevard Park and Tukwila. As of the 2021-2022 academic year, 106 schools are operated by the district, which serve 51,650 students throughout the city.