SLHS may refer to:

St. Louis High School (disambiguation), several schools San Leandro High School, San Leandro, California, US Seven Lakes High School, Katy, Texas, US Show Low High School, Show Low, Arizona, US South Lakes High School, Reston, Virginia, US South Lyon High School, South Lyon, Michigan, US Spanaway Lake High School, Spanaway, Washington, US Standley Lake High School, Westminster, Colorado, US