School District (Second Class) South Allegheny School District (Third Class) South Fayette Township School District (Third Class) South Park School District (Third Class) Steel Valley School District (Third Class) Sto-Rox School District (Third Class) Upper St. Clair School District (Third Class) West Allegheny School District (Third Class) West Jefferson Hills School District (Third Class) West Mifflin Area School District (Third Class) Wilkinsburg Borough School District (Third Class) Woodland Hills School District (Second Class) Midwestern IU 4 Butler County Butler Area School District (Second Class) Karns City Area School District (Third Class; also extends into Armstrong and Clarion Counties) Knoch School District (Third Class) Mars Area School District (Third Class) Moniteau School District (Third Class) Seneca Valley School District (Third Class) Slippery Rock Area School District (Third Class) Lawrence County Ellwood City Area School District (Third Class; also extends into Beaver County) Laurel School District (Third Class) Mohawk Area School District (Third Class) Neshannock Township School District (Third Class) New Castle Area School District (Second Class) Shenango Area School District (Second Class) Union Area School District (Third Class) Wilmington Area School District (Third Class; also extends into Mercer County) Mercer County Commodore Perry School District (Fourth Class) Farrell Area School District (Third Class) Greenville Area School District (Third Class) Grove City Area School District (Third Class) Hermitage School District (Third Class) Jamestown Area School District (Fourth Class; also extends into Crawford County) Lakeview School District (Third Class) Mercer Area School District (Third Class) Reynolds School District (Third Class) Sharon City School District (Third Class) Sharpsville Area School District (Third Class) West Middlesex Area School District (Third Class) Northwest Tri-County IU 5 Crawford County Conneaut School District (Third Class) Crawford Central School District (Second Class; also extends into Mercer County) Penncrest School District (Third Class; also extends into Venango County) Erie County Corry Area School District (Third Class; also extends into Crawford and Warren Counties) Erie City School District (Second Class) Fairview School District (Third Class) Fort LeBoeuf School District (Third Class) General McLane School District (Third Class) Girard School District (Third Class) Harbor Creek School District (Third Class) Iroquois School District (Third Class) Millcreek Township School District (Second Class) North East School District (Third Class) Northwestern School District (Third Class) Union City Area School District (Third Class; also extends into Crawford County) Wattsburg Area School District (Third Class) Warren County Warren County School District (Second Class) Riverview IU 6 Clarion County