Oswego High School is a four-year comprehensive, public high school in Oswego, Illinois. The school has been referred to as "Oswego High School," "Oswego Central High," (after a second high school was built) or "Oswego" (this last being most frequently used by other schools in the region). "Oswego High School" or simply "Oswego" or "OHS" are the currently accepted names, both by its parent district (the Oswego School District)) and the city itself. Many of these names are still used interchangeably by the students, staff, faculty and area residents.