Police are reminding youngsters in Kendal that it's illegal to be on school premises outside school hours.
The reminder has been issued after repeated acts of vandalism and anti-social behaviour in the grounds of Heron Hill primary and Kirkbie Kendal high school.
Anyone caught could be prosecuted under the education act of 1996.
PCSO Tom Robinson said: "If you are aware of people causing a nuisance on an educational premises please report to Kendal Police on 101."