| Adams County | 6 | 12,353 | Conewago Valley SD, Gettysburg Area SD, Bermudian Springs SD, Littlestown Area SD, Upper Adams SD, Fairfield Area SD |
| Allegheny County | 43 | 132,763 | All 43 Allegheny County districts → |
| Armstrong County | 3 | 6,063 | Armstrong SD, Apollo-Ridge SD, Leechburg Area SD |
| Beaver County | 14 | 19,756 | All 14 Beaver County districts → |
| Bedford County | 5 | 5,797 | Bedford Area SD, Chestnut Ridge SD, Everett Area SD, Tussey Mountain SD, Northern Bedford County SD |
| Berks County | 18 | 65,186 | All 18 Berks County districts → |
| Blair County | 7 | 15,473 | Altoona Area SD, Hollidaysburg Area SD, Tyrone Area SD, Spring Cove SD, Bellwood-Antis SD, Claysburg-Kimmel SD, Williamsburg Community SD |
| Bradford County | 7 | 8,400 | Athens Area SD, Towanda Area SD, Troy Area SD, Wyalusing Area SD, Sayre Area SD, Canton Area SD, Northeast Bradford SD |
| Bucks County | 13 | 79,129 | All 13 Bucks County districts → |
| Butler County | 8 | 25,071 | Seneca Valley SD, Butler Area SD, Mars Area SD, Knoch SD, Slippery Rock Area SD, Freeport Area SD, Karns City Area SD, Moniteau SD |
| Cambria County | 13 | 15,845 | All 13 Cambria County districts → |
| Cameron County | 1 | 436 | Cameron County SD |
| Carbon County | 5 | 7,812 | Lehighton Area SD, Panther Valley SD, Jim Thorpe Area SD, Palmerton Area SD, Weatherly Area SD |
| Centre County | 4 | 12,138 | State College Area SD, Bellefonte Area SD, Bald Eagle Area SD, Penns Valley Area SD |
| Chester County | 12 | 68,866 | All 12 Chester County districts → |
| Clarion County | 7 | 5,069 | Redbank Valley SD, Clarion Area SD, Keystone SD, Clarion-Limestone Area SD, North Clarion County SD, Allegheny-Clarion Valley SD, Union SD |
| Clearfield County | 7 | 9,729 | DuBois Area SD, Clearfield Area SD, Philipsburg-Osceola Area SD, Curwensville Area SD, West Branch Area SD, Moshannon Valley SD, Harmony Area SD |
| Clinton County | 1 | 3,325 | Keystone Central SD |
| Columbia County | 5 | 5,729 | Central Columbia SD, Bloomsburg Area SD, Southern Columbia Area SD, Benton Area SD, Millville Area SD |
| Crawford County | 4 | 8,966 | Crawford Central SD, Penncrest SD, Titusville Area SD, Conneaut SD |
| Cumberland County | 7 | 28,648 | Cumberland Valley SD, Carlisle Area SD, Mechanicsburg Area SD, East Pennsboro Area SD, Big Spring SD, South Middleton SD, Camp Hill SD |
| Dauphin County | 11 | 36,004 | All 11 Dauphin County districts → |
| Delaware County | 15 | 69,877 | All 15 Delaware County districts → |
| Elk County | 3 | 3,148 | Saint Marys Area SD, Ridgway Area SD, Johnsonburg Area SD |
| Erie County | 13 | 34,241 | All 13 Erie County districts → |
| Fayette County | 6 | 13,821 | Connellsville Area SD, Albert Gallatin Area SD, Laurel Highlands SD, Uniontown Area SD, Brownsville Area SD, Frazier SD |
| Forest County | 1 | 326 | Forest Area SD |
| Franklin County | 6 | 22,619 | Chambersburg Area SD, Waynesboro Area SD, Shippensburg Area SD, Greencastle-Antrim SD, Tuscarora SD, Fannett-Metal SD |
| Fulton County | 3 | 1,957 | Central Fulton SD, Southern Fulton SD, Forbes Road SD |
| Greene County | 5 | 4,350 | Central Greene SD, Carmichaels Area SD, Jefferson-Morgan SD, West Greene SD, Southeastern Greene SD |
| Huntingdon County | 4 | 4,480 | Huntingdon Area SD, Mount Union Area SD, Southern Huntingdon County SD, Juniata Valley SD |
| Indiana County | 7 | 8,525 | Indiana Area SD, River Valley SD, Marion Center Area SD, United SD, Homer-Center SD, Purchase Line SD, Penns Manor Area SD |
| Jefferson County | 3 | 4,056 | Punxsutawney Area SD, Brookville Area SD, Brockway Area SD |
| Juniata County | 1 | 2,234 | Juniata County SD |
| Lackawanna County | 9 | 25,147 | Scranton SD, Abington Heights SD, North Pocono SD, Valley View SD, Mid Valley SD, Riverside SD, Carbondale Area SD, Lakeland School District, Old Forge SD |
| Lancaster County | 16 | 62,721 | All 16 Lancaster County districts → |
| Lawrence County | 8 | 10,686 | New Castle Area SD, Ellwood City Area SD, Mohawk Area SD, Neshannock Township SD, Laurel SD, Wilmington Area SD, Shenango Area SD, Union Area SD |
| Lebanon County | 6 | 18,891 | Cornwall-Lebanon SD, Lebanon SD, Palmyra Area SD, Eastern Lebanon County SD, Northern Lebanon SD, Annville-Cleona SD |
| Lehigh County | 9 | 48,409 | Allentown City SD, Parkland SD, East Penn SD, Whitehall-Coplay SD, Southern Lehigh SD, Northwestern Lehigh SD, Northern Lehigh SD, Catasauqua Area SD, Salisbury Township SD |
| Luzerne County | 12 | 46,259 | All 12 Luzerne County districts → |
| Lycoming County | 8 | 14,543 | Williamsport Area SD, Jersey Shore Area SD, Montoursville Area SD, East Lycoming SD, Loyalsock Township SD, South Williamsport Area SD, Muncy SD, Montgomery Area SD |
| McKean County | 5 | 5,297 | Bradford Area SD, Kane Area SD, Port Allegany SD, Smethport Area SD, Otto-Eldred SD |
| Mercer County | 12 | 12,846 | All 12 Mercer County districts → |
| Mifflin County | 1 | 4,507 | Mifflin County SD |
| Monroe County | 4 | 22,521 | Pocono Mountain SD, East Stroudsburg Area SD, Stroudsburg Area SD, Pleasant Valley SD |
| Montgomery County | 22 | 107,517 | All 22 Montgomery County districts → |
| Montour County | 1 | 2,138 | Danville Area SD |
| Northampton County | 8 | 38,751 | Bethlehem Area SD, Easton Area SD, Northampton Area SD, Nazareth Area SD, Bangor Area SD, Wilson Area SD, Saucon Valley SD, Pen Argyl Area SD |
| Northumberland County | 6 | 10,684 | Shikellamy SD, Shamokin Area SD, Milton Area SD, Mount Carmel Area SD, Warrior Run SD, Line Mountain SD |
| Perry County | 4 | 5,519 | West Perry SD, Susquenita SD, Newport SD, Greenwood SD |
| Philadelphia County | 1 | 120,057 | Philadelphia City SD |
| Pike County | 2 | 7,017 | Delaware Valley SD, Wallenpaupack Area SD |
| Potter County | 5 | 1,707 | Northern Potter SD, Coudersport Area SD, Galeton Area SD, Oswayo Valley SD, Austin Area SD |
| Schuylkill County | 11 | 16,682 | All 11 Schuylkill County districts → |
| Snyder County | 2 | 4,202 | Selinsgrove Area SD, Midd-West SD |
| Somerset County | 11 | 8,294 | Somerset Area SD, Windber Area SD, North Star SD, Conemaugh Township Area SD, Berlin Brothersvalley SD, Meyersdale Area SD, Rockwood Area SD, Shade-Central City SD, Shanksville-Stonycreek SD, Salisbury-Elk Lick SD, Turkeyfoot Valley Area SD |
| Sullivan County | 1 | 620 | Sullivan County SD |
| Susquehanna County | 6 | 5,770 | Montrose Area SD, Elk Lake SD, Blue Ridge SD, Mountain View SD, Forest City Regional SD, Susquehanna Community SD |
| Tioga County | 3 | 5,055 | Northern Tioga SD, Southern Tioga SD, Wellsboro Area SD |
| Union County | 2 | 3,516 | Lewisburg Area SD, Mifflinburg Area SD |
| Venango County | 4 | 5,667 | Oil City Area SD, Franklin Area SD, Cranberry Area SD, Valley Grove SD |
| Warren County | 1 | 3,796 | Warren County SD |
| Washington County | 15 | 27,675 | All 15 Washington County districts → |
| Wayne County | 2 | 4,172 | Wayne Highlands SD, Western Wayne SD |
| Westmoreland County | 17 | 42,614 | All 17 Westmoreland County districts → |
| Wyoming County | 2 | 2,921 | Tunkhannock Area SD, Lackawanna Trail SD |
| York County | 16 | 64,000 | All 16 York County districts → |
