Prairie Ridge High School is the newest of the four high schools in Community High School District 155 in Crystal Lake, Illinois, United States. The other three high school in the area include Crystal Lake Central, Crystal Lake South, and Cary-Grove. Prairie Ridge High school opened in 1997 to address the overpopulation of the three area high schools. In addition to Crystal Lake, Prairie Ridge also accepts students from Prairie Grove, Oakwood Hills, Burtons Bridge, Ridgefield, and small portions of McHenry, Cary, and Bull Valley. Prior to opening its doors, the first graduating class of students was allowed to vote on the name, colors, and song for the new High School. The District approved the name, and Prairie Ridge was born. As of the 2015-2016 school year, Prairie Ridge is the smallest