| Code | Description |
| 0 | Beaverton/Hillsboro/Capital Center |
| 3 | Salem/Chemeketa CC |
| 4 | Portland/PCC |
| 5 | Coos Bay/SWOCC |
| 6 | Albany/LBCC |
| 7 | Astoria/Clatsop CC |
| 8 | Ontario/TVCC |
| 9 | Pendleton/BMCC |
| A | Ashland/SOU |
| B | Oregon State - Cascades |
| C | Oregon State - Corvallis |
| D0 | E-Campus - Distance Ed Beaverton/Hillsboro |
| D1 | E-Campus - Distance Ed Overlay Course |
| D2 | E-Campus - Distance Ed Central Oregon |
| D3 | E-Campus - Distance Ed Salem/Chemeketa CC |
| D4 | E-Campus - Distance Ed Portland/PCC |
| D5 | E-Campus - Distance Ed Coos Bay/SWOCC |
| D6 | E-Campus - Distance Ed Albany/LBCC |
| D7 | E-Campus - Distance Ed Astoria/Clatsop CC |
| D8 | E-Campus - Distance Ed Ontario/TVCC |
| D9 | E-Campus - Distance Ed Pendleton/BMCC |
| DA | E-Campus - Distance Ed Ashland/SOU |
| DB | E-Campus - Distance Ed web/self upper 300+ |
| DE | E-Campus - Distance Ed Eugene/UO |
| DH | E-Campus - Distance Ed Portland/OHSU |
| DI | E-Campus - Distance Ed web/self lower div |
| DJ | E-Campus - Distance Ed Corvallis campus |
| DK | E-Campus - Distance Ed Klamath Falls/KCC/OIT |
| DL | E-Campus - Distance Ed LaGrande/EOU |
| DM | E-Campus - Distance Ed Monmouth/WOU |
| DN | E-Campus - Distance Ed Newport/HMSC |
| DO | E-Campus - Distance Ed Portland/OCATE |
| DP | E-Campus - Distance Ed Portland/PSU |
| DQ | E-Campus - Distance Ed Warm Springs |
| DR | E-Campus - Distance Ed Intermediate Classes |
| DS | E-Campus - Distance Ed Other US |
| DV | E-Campus - Distance Ed Hood River/The Dalles |
| DX | E-Campus - Distance Ed Medford/Grants Pass |
| DY | E-Campus - Distance Ed Gresham/MHCC |
| DZ | E-Campus - Distance Ed International |
| E | Eugene/UO |
| H | Portland/OHSU |
| K | Klamath Falls/KCC/OIT |
| L | LaGrande/EOU |
| M | Monmouth/WOU |
| N | Newport/HMSC |
| O | Portland - OCATE Center |
| P | Portland/PSU |
| Q | Central Oregon/Warm Springs |
| S | Other States (Non-Oregon) |
| V | Hood River/The Dalles |
| X | Medford/Grants Pass |
| Y | Gresham/MHCC |
| Z | International Sites |