Homestead High School is a four-year public high school located in Mequon, Wisconsin, United States, a northern suburb of Milwaukee. Part of the Mequon-Thiensville School District, it serves a 48-square-mile (120 km2) area including the city of Mequon and the village of Thiensville. The school opened in 1959 and educates nearly 1,300 students annually. Its graduation rate is 99%, and its most recent average composite ACT scores were 23.4, the seventeenth-highest of any public school in the state. Homestead is accredited by the North Central Association of Colleges and Schools.