| PCHS | Pacific Coast High School 
| Others |
| PCHS | Palisades Charter High School
| Others |
| PCHS | Pallet Container Handling System
| Others |
| PCHS | Pamlico County High School
| Others |
| PCHS | Panther Creek High School
| Others |
| PCHS | Paramus Catholic High School
| Others |
| PCHS | Paris Cooperative High School
| Others |
| PCHS | Park Center High School
| Others |
| PCHS | Park City High School
| Others |
| PCHS | Parkersburg Catholic High School
| Others |
| PCHS | Parkway Central High School
| Others |
| PCHS | Pasquotank County High School
| Others |
| PCHS | Pass Christian High School
| Others |
| PCHS | Patrick County High School
| Others |
| PCHS | Paulding County High School
| Others |
| PCHS | Peach County High School
| Others |
| PCHS | Pearl City High School
| Others |
| PCHS | Pearl City High School Pearl City High School
| Others |
| PCHS | Pekin Community High School
| Others |
| PCHS | Pell City High School
| Others |
| PCHS | Pella Christian High School
| Others |
| PCHS | Peninsula Catholic High School
| Others |
| PCHS | Peninsula Community Health Services
| Others |
| PCHS | Pennington County Historical Society
| Others |
| PCHS | Pennington County Historical Society's
| Others |
| PCHS | Pet Connection Humane Society
| Others |
| PCHS | Piece of Crap High School
| Others |
| PCHS | Piedmont Classical High School
| Others |
| PCHS | Pierce County High School
| Others |
| PCHS | Pierrefonds Comprehensive High School
| Others |
| PCHS | Pike Central High School
| Others |
| PCHS | Pinckney Community High School
| Others |
| PCHS | Pine City High School
| Others |
| PCHS | Pine Creek High School
| Others |
| PCHS | Plainfield Central High School
| Others |
| PCHS | Plant City High School
| Others |
| PCHS | Platte County High School
| Others |
| PCHS | Pocahontas County High School
| Others |
| PCHS | Port Charlotte High School
| Others |
| PCHS | Port Chester High School
| Others |
| PCHS | Port Clinton High School
| Others |
| PCHS | Portage Central High School
| Others |
| PCHS | Powell County
| Others |
| PCHS | Powell County High School
| Others |
| PCHS | Powers Catholic High School
| Others |
| PCHS | Prairie Central High School
| Others |
| PCHS | Premier Choice Health Services
| Others |
| PCHS | Premium Cattle Health Scheme
| Others |
| PCHS | Princeton Community High School
| Others |
| PCHS | Procurement of Computer Hardware and Software
| Others |
| PCHS | Prudhoe Community High School
| Others |
| PCHS | Pulaski County High School
| Others |
| PCHS | Putnam City High School
| Others |
| PCHS | Putnam County High School
| Others |
| pchs. | Purchasing
| Others |