Rochester Area Junior-Senior High School is a secondary education school located in Rochester, Pennsylvania. Founded in 1890, it is one of the oldest high schools in the entire state of Pennsylvania. With a current student enrollment of approximately 450 students, Rochester Area Junior-Senior High School is also one of the smallest secondary schools in Pennsylvania. Located in the heart of Beaver County, Pennsylvania, at the confluence of the Ohio and Beaver rivers, (approximately 25 miles northwest of Pittsburgh and 15 miles from the Ohio state line,) Rochester Area School District has a total K-12 enrollment of approximately 950 students. Over 90% of Pennsylvania school districts are larger. Rochester Area School District comprises the three small municipalities of Rochester Borough, East Rochester Borough and Rochester Township. Formerly known as "the hub of Beaver county", Rochester is in the center of a formerly heavily industrial area best known for its steel mills.