Thames Valley Police is appealing for witnesses after bins were set on fire at the Stantonbury Campus off of Purbeck.
At around 10.40pm on Sunday, offenders set fire to two bins on the school premises causing two window frames to melt.
Bucks Fire and Rescue Service attended the scene.
Officers are appealing for witnesses who might have seen offenders running away from the area into nearby housing estates.
If you have any information, please contact Special Constable Jonathan Holt, via the Thames Valley Police Enquiry Centre on 101.
If you don’t want to speak directly to the police, you can contact Crimestoppers anonymously on 0800 555 111.
No personal details are taken, information is not traced or recorded and you will not go to court.