LaSalle-Peru Township High School, also known as LaSalle-Peru High School, LPHS, or simply LP, is a public four-year high school located at 541 Chartres Street in LaSalle, Illinois, a small city in LaSalle County, Illinois, in the Midwestern United States. LPHS serves the communities and surrounding areas of LaSalle, Peru, Oglesby, Tonica, and Dimmick. The campus is located 18 miles west of Ottawa, Illinois. The high school takes students from the following townships: Dimmick, Waltham, Peru, LaSalle, Utica, Deer Park, Eden, Vermillion, Hope, and Richland.