Rockford High School was the first school opened by the newly formed, citywide, school district, Rockford Public School District 205 in Rockford, Illinois. Opened in 1885, it served as a high school from 1885 until 1940, then as the administration offices of the school district until 2011. It was sold to the City of Rockford in 2014, and demolished in 2015 as part of a redevelopment project.

Rockford is a city in Winnebago County, Illinois, United States. Located in far northern part of the state on the banks of the Rock River, Rockford is the county seat of Winnebago County. The most-populous Illinois city outside of the Chicago metropolitan area, the city is the fifth-largest city in Illinois and the 171st-most populous in the U.S.