Just seen this place on Countryfile, where the school went from a 4% pass rate to a 100% pass rate in exams. The headteacher puts this down (at least in part) to the fact that the school turned its playing field into an allotment and encouraged the pupils to get involved in growing vegetables, keeping chickens for eggs etc.
The pupils then eat their own produce in the school canteen, and learn cookery at school to a high standard.
Raises an interesting question about the involvement in extra curricular activities and their effect on academic achievement. Furthermore, the consequences of having a positive reason other than classroom learning to turn up and enjoy school.
I’ve no doubt that a further positive side-effect is the fact that the pupils are having decent meals at lunch time, rather than poor quality junk that is so often served up in school canteen.