Trespassing on school grounds – can you help?

Over the last couple of months we have been experiencing trespassing on school grounds by groups of people  who appear to be older than primary age pupils. This culminated last night in staff members having to meet police officers at school after reports that people were on the school site again. We would be grateful for anyone who can pass this information to neighbours / friends / other family members to get the message around the community that anyone on school property outside of school hours is trespassing. The school site is covered by CCTV and security patrols will be increased, however if you do notice anything, please ring 101 and report this. Many thanks for your support.