Blooper

The plan is to send 35 pupils to the summer camp. These would fit on one bus, but on the day of departure two buses are used, and an enormous number of kids appear to be going.

Maureen's blouse is fully done up just before she enter's Eric's house then in the next shot it's undone.

Carol Hawkins' hot pants are red when the class are throwing garbage through the window of a rival school's hut, but are black by the time they return to their own hut to find it vandalized.

When Hedges walks towards Penny after she has parked her car behind the coach in the lay-by there is a Vauxhall Victor approaching on the road behind her, but in the next take the road behind her is clear.

The amount of icing around Frankie's mouth varies from shot to shot when on the bus.

According to the timeline of the script the camp takes place mostly in November. But it's very clearly Spring or Summer when 5C are there.(The film was actually shot in Summer of 1971).

When the two girl pupils are leaving, Miss Cutforth (Patsy Rowlands) can be heard off screen saying the line "Goodbye girls". When they answer "Bye Miss" (also off screen), it is also clearly Patsy Rowlands saying the reply line.

When Potter walks across the playground with his leaky bucket of paint, marks left from a previous take can be seen on the ground.

A bird's nest falls on Derek Guyler's head followed by two birds' eggs in succession a moment later. But surely the eggs would have been in the nest and would have dropped simultaneously.

When Angela leaps on Bernard at the end and says 'At last, you're mine', the movement of her lips in not in sync with the words.

Shadow of boom mic visible when Miss Ewell walks back along the bus.

Shadow of camera falls on pupil at front of school assembly while singing "All things bright and beautiful" at the start of the film.

When Bernard is in the pub he orders the kids to go back to camp and penny threatens to report him for discrimination she would have to admit that she is breaking the law by serving alcohol to underage kids, it would be a pretty dumb move.

Surely Faisal as a faithful Muslim would not be drinking alcohol in a pub as he appears to be doing in the bar scene.