Bernard has to say goodbye to his 5C class at Fenn Street School but his new class (4C) brings some unexpected problems.
Bernard has finally decided to leave Fenn Street School, but he finds that resigning is not as simple as he had imagined.
All contributions are gratefully accepted when magazine time comes around at Fenn Street School. But headmaster Cromwell's efforts to muster his usual support are thwarted by an irate local shopkeeper and Fenn Street's alternative press.
Georgie Duffy is nervous. He is due to start his first term at Fenn Street School - three weeks late. But big brother Eric, a member of last year's 5C and an old hand at dealing with authority, explains that there is nothing to worry about.
Bernard Hedges has left Fenn Street School and the gap has been filled by Mr Dix, a living example of everything a teacher should not be. The staff long for a new young champion to challenge this tyrant, but when David Ffitchett-Brown arrives wearing beads, they wonder just what sort of champion they have.
Cromwell's yo-yo obsession helps distract him from David's request for new school supplies, including a new television set that Mr Price attacked with Nitric Acid after his horse had lost a horse race. But between themselves and Potter they work out a cunning plan.
When Cromwell succumbs to an attack of administrative megalomania, the Charge of the Light Brigade is cancelled, a class is lost at the cinema and Mr Price is driven to drink.
It looks as though Fenn Street will lose yet another teacher when Price applies for a job in industry. But can he really make the break?
Potter's repeated demands for an assistant are finally heeded, and Sidney Noakes arrives at Fenn Street.
The amalgamation with neighbouring Weaver Street and the possibility of Fenn Street going comprehensive is more than the Fenn Street staff can cope with. Potter has to decide where his loyalties lie.
For Miss Ewell, life is not exactly a bowl of cherries at the moment. There is the school inspection to be organised, and the new Weaver Street kids to keep under control.
Headmaster Cromwell makes a new rule about haircuts and skirts at Fenn Street School. But the kids won't take this lying down, they decide on a sit-in to ask for pupil representation on staff meetings.
Potter's boasting about his war career gets out of hand when he is chosen to carry the banner at his El Alamein reunion.
Cromwell's latest idea is a school song for the first meeting of his newly-formed Old Fennians Association. With the staff bursting into a flurry of musical activity, and the return of the old Form 5C for the big event, it is a day to remember.
The headmaster's "Clean Up Fenn Street" campaign is in full swing. But when Potter takes on some temporary assistance, an explosive situation develops which threatens to clean up Fenn Street for good.
Miss Ewell gets her "mountie", Miss Petting her mandarin and Daisy her "prince".
Fenn Street School makes sporting history when its football team reaches the semi-final of the district cup. But Miss Ewell has a match of her own with the star of the team, and if she wins, the school loses.
When Fenn Street School holds a charity walk for the local "old and needy", the staff are confident of its success. But deciding just who the "needy" are, can be a tricky business.
When the chairman of the Fenn Street School governors makes rash promises to his "niece", the whole school is affected. Cromwell gets a secretary, the kids get a pin-up, and Pricey gets a whole new outlook on life.
Headmaster Cromwell has a new toy to help him communicate with the whole school, but Price does not want to keep in touch, for an old enemy is out to get him.
Wedding bells ring out for Miss Ewell and Mr Sibley. Meanwhile, Potter's ding-dong with his wife Ruby ends in a fly-away flourish.