Big School is a British situation comedy produced by BBC, which depicts the lives and funny interactions between teachers at Greybridge Secondary School, a fictional institution located near Watford, North London. The plot revolves around socially awkward chemistry teacher’s Keith Church (David Walliams) crush on Sarah Postern (Catherine Tate), a French teacher who’s also pursued by a different-end-of-the-spectrum character – the ill-mannered sports teacher Trevor Gunn (Philip Glenister).
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