Educator, staff, or administrator Educator, staff, or administrator Educator, staff, or administrator 
Educator, staff, or administrator | First Name | Luke |
| Last Name | Callahan, Ed.D. |
| User Name | luke |
| What kind of K12Leader are you? | Educator, staff, or administrator |
| Current school or organization | Groton-Dunstable Regional School District |
| LinkedIn (or other social network profile) |