text: Teachers is a British television comedy-drama series, created by Tim Loane and originally shown on Channel 4. The series follows a group of secondary school teachers in their daily lives.
  In the first series, probationary teacher Simon Casey (Andrew Lincoln) is the protagonist; later series have an ensemble cast. The cast changes dramatically, with few original characters remaining by the fourth series. While some of these disappearances are explained, others are not.
  The first three series are set in the fictional Summerdown Comprehensive, which merges with another school in the fourth series to form Wattkins School. The first three series were filmed at the former Merrywood School and the fourth was filmed at the former Lockleaze school in Bristol, England.