Mind Your Language S1, S2 and S3 - https://archive.org/details/mind-your-language-s-01-e-02-an-inspector-calls.

The Examination

The students prepare to take their Lower Cambridge Certificate exam at the end of the first term. Meanwhile, Mr Brown has a disagreement with a couple in the pub, which comes back to haunt him when it turns out that the man (Mr Short, a former principal of the school) will be supervising the exam.