Answer
The answer is **Chalk**. _Chalk_ was a British sitcom created and written by Steven Moffat that aired on BBC One from 1997 to 2002. The show follows the lives of the staff and students of Chalkhill Comprehensive School, a fictional comprehensive school in London. The series stars David Bamber as head teacher Ian Chesterton, with Robert Bathurst, Julia Davis, and Joanna Scanlan as his deputy heads.