Northwestern School District is a small, rural, public school district based in Albion, Pennsylvania, United States.

The district is located in Erie County, which is in the northwestern corner of Pennsylvania bordering Lake Erie and the State of Ohio.

Northwestern School District encompasses approximately 122 square miles (320 km2).

Three boroughs (Albion, Cranesville, and Platea) and three townships (Conneaut, Elk Creek, and Springfield) are served by the Northwestern School District.

According to 2000 federal census data, Northwestern School District serves a resident population of 11,767.