| CACC Main Office | 517-676-3602 |
| CACC Placement | 517-676-3399 |
| Capital Area Substitue Sys | 517-244-1722 |
| Delhi Center/Holt Early On/Itinerants | 517-913-0230 |
| Early On / Heartwood | 517-676-5730 |
| Early On / Hill | 517-755-4109 |
| Early On / Thorburn | 517-244-1726 |
| Galileo | 517-203-2798 |
| Heartwood | 517-676-5730 |
| HWS Clinic | 517-676-5302 |
| LAMP | 517-377-6796 |
| Malcolm Williams | 517-628-2707 |
| REMC | 517-676-9726 |
| Secondary Learning Center | 517-676-9398 |
| Superintendent / Public Information | 517-676-4930 |
| TEC Business Office | 517-676-8007 |
| TEC Human Resources | 517-676-4294 |
| TEC Information Systems | 517-676-4295 |
| TEC Instructional Services | 517-244-1154 |
| TEC Mail Room | 517-676-1277 |
| TEC Special Education | 517-244-9510 |
