A large group of travellers with around 50 caravans accessed the playing fields on Southam College over the weekend.
Warwickshire Police received a call about the encampment at 4pm on Saturday July 29. The land is owned privately by the Stowe Valley multi-academy trust.
A spokesman for Warwickshire County Council said: “Warwickshire County Council and Warwickshire Police are offering support to the trust to resolve the situation.”
And a spokesman for the police said: “We are currently providing support to the school and the council at this time.”