It's Suzy's first day as a teacher but none of her training has prepared her to cope with Galfast High School. She soon encounters Eric Slatt, the incompetent yet ambitious Deputy Headmaster, who manages to make a bad school worse. There are dead rats in the water tank, a dead teacher in one of the classrooms and the pupils are revolting in every sense of the word.

Eric Slatt has applied for a headship and so has his current headmaster, Mr. Nixon. Eric is desperate to move away from Galfast High School, so he'll go to any lengths to make sure he gets a new job.

A disillusioned pupil is interviewed on local radio and rumours begin to spread about Galfast High School. A television news crew turns up to investigate the rumours while the staff are having a meeting. Eric Slatt has finds himself trapped and in desperate need of a trip to the toilet.

One of the sixth formers at Galfast High School becomes a mother, but who is the father ? Surely it can't be Eric Slatt ? And who is 'Pumpman' ?

The school is about to be inspected, so Eric Slatt has started to panic. He becomes even more panic-stricken when he finds that all of the pupils have disappeared.

Eric Slatt is worried when his mother threatens to pay a visit. He's afraid that details of his childhood, which he would rather keep hidden, will be revealed. He also has to cope with the annual football match between pupils and staff.

A new student named Ronald Langham spends a week at the school.

An inspector from the Local Education Authority visits the school to investigate financial irregularities.

Eric Slatt criticises Maureen Bullivant during morning assembly. Later, at the parents' evening, he has reason to regret his harsh words.

Eric and Suzy both have a dream after a new pupil starts at the school.

Exams are approaching, and Eric Slatt has to go and upset the school's star pupil.

It's the end of term, and the staff are looking forward to celebrating.