Ten iPads were stolen in a burglary at Grange Primary School in Dorothy Road, Kettering, in the early hours of Wednesday (25 May).
At around midnight, CCTV footage shows two men spending about 10 minutes looking through windows.
A short time later, at about 1.30am, CCTV shows two men breaking into one of the classrooms and removing a cabinet containing the iPads.
The men were wearing black or grey hooded tops with the hoods up and jogging bottoms
Witnesses or anyone with information about the stolen iPads are asked to contact Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.