Public land, under trust, "sold" to others
Was a very popular pastime in South Wales back in the day
Local public (for our left pondian cousin, read "private" as opposed to "state" school gets permission to use part of a piece of common land as a sports field
School is reluctantly forced to fence off their sports field area to avoid dog walkers and general hoi polloi interfering with the Inter House rugby tournaments.
School then sells of "their" playing fields to developer for much needed extra bunce
Small donation to local council chairman's Bentley Continental fund and everything's cushti