2520 Mill Bridge

Slippery Rock Township has no formal zoning ordinances, the site has remained a highly versatile piece of real estate. The property—encompassing the 13,000-square-foot school building, a large 46'x64' detached garage, and roughly 7.5 acres of land—recently hit the market again for $200,000. The outdoor baseball diamond remained an active field for local youth sports leagues. Today, it stands as a preserved piece of early 20th-century Lawrence County educational architecture. History of the property: The building at **2520 Mill Bridge Road** in New Castle, Pennsylvania (nestled in Slippery Rock Township, Lawrence County) holds a rich history as a central hub for rural education, shifting over its century-long lifespan from a consolidated township school to a commercial storage site, and even a local music venue. The story of the school unfolds across several distinct eras: 1. The Consolidation Era (1928–1929) By the late 1920s, the Slippery Rock Township school board realized that the old, two-room brick schoolhouse down the road (built around 1876 at the corner of Firehall and Mill Bridge Roads) could no longer handle the growing student population. In May 1928, construction began on a new, modern consolidated facility at the 2520 Mill Bridge Road site. Designed by architect Albert L. Thayer, the architecturally striking 13,000-square-foot brick building featured eight primary classrooms wrappered around a central gymnasium and stage. The new school opened its doors to 123 students in early January 1929 and was formally dedicated on January 24, 1929. While known locally as the **"New" Princeton School**, it officially functioned as the **Slippery Rock Township High School**. At its opening, approximately 50 of the enrolled students were in the high school grade levels. 2. The Elementary Years & Transition (1955–1978) The structural landscape of local education shifted heavily in July 1955 when Slippery Rock Township joined the newly formed **Laurel Joint School District**. With high school students progressively reassigned to larger consolidated regional facilities, the Princeton School transitioned to serving primarily as a community elementary school. It anchored the local neighborhood children here for another two decades. By the late 1970s, the Laurel School District began constructing a massive, unified elementary school complex to centralize the region's education. Recognizing that the Princeton School's days were drawing to a close, the district sold the building for $50,100 in June 1978. It remained in active service for just a few more months, finally closing its doors forever as an active public school in December 1978 when the new Laurel Elementary School officially opened. 3. Adaptive Reuse: From Coal to the "School of Rock" In early 1979, the property entered the private sector when the Carlson Mining Company acquired it. The company used the former classrooms for administrative office spaces and utilized the extensive acreage and detached garage infrastructure for storage. Several rooms were also subdivided and leased to other local businesses. Despite becoming a commercial property, the site retained its deep ties to the community: * The outdoor baseball diamond remained an active field for local youth sports leagues. * In 2006, the building took on a colorful new identity when the central gymnasium began hosting local music concerts, earning the affectionate neighborhood moniker **"The Princeton School of Rock."**