Maudin Street School is hardly a paradise and, when a new school starts looking for a headmaster in his rural hometown, the Maudin headmaster plans to go for the job. However his first problem is a school inspector and child psychologist coming to visit the school and give it a full assessment. On learning this news the pupils decide to get a bit of revenge on the headmaster and the staff by orchestrating a campaign of problems and bad behaviour; but not so direct that the staff will be able to work out who is responsible and easily bring it to a halt.

In the third of the Carry On series, the film moves away from the basic template of Sergeant and Constable and goes for a different plot in a school setting. The basic frame is that the staff are being forced into a series of pratfalls by the scheming pupils while busily trying to impress the inspectors at the same time. Into this mix is thrown the usual element of romance (with Connor getting his third bite at the "shy man desired by forward female" cherry in three films) and the whole thing is rather slight. The humour doesn't have the heavy focus on bums, tits and innuendo that the series developed but this is not to say that it is the height of wit because it is not. Instead the humour is a mix of physical humour and some mild word play and, as such it is actually quite amusing if you are in the mood, although I'd be surprised if you found yourself roaring with laughter at any point.

The cast are OK even if they are mostly just repeating the roles they have had from the first two Carry On films. As I said Connor has the same character and essentially the same subplot but is OK with it. Hawtrey camps it up well while Williams is nicely proper and stuck up. Phillips does his usual stuff reasonably well in a minor role but his partner, Knight, is not that good and is a bit stiff. Sims continues with the "fanciable female" role in this film (although she would become more the "battleaxe wife" as the series went on) and didn't totally convince me. After being a bit flat in Constable, Jacques has a good slice of the comedy while also having her usual matron-style character.

Overall this is an OK entry into the series although those used to the more bawdry entries into the series may be a little disappointed with how slight it is. The plot is unengaging and only acts as a frame for the comedy that is mainly pratfalls with some wit in the dialogue. Few viewers will be roaring with laughter (or even laughing out loud that much) but it is a little bit harmless fun that should distract for a short while.