Intruders smashed a window at a school in Chorley taking three computers and a waste paper bin.
It is the second primary school in the area which has been burgled in the space of a week.
Burglars forced their way into St James’ Church of England Primary School in Devonport Way at some point between 6pm on Friday 10 and 6.45am on Monday 13.
A police spokesman said: “Someone has managed to break the lock on the gate and they have got into a courtyard area.
“They smashed a window and gained entry to the school itself.
“Three computers have been taken and a waste paper bin.”
Anyone with information should call 101 quoting ref lc-20170213-0168 or anonymously on crime stoppers 0800 555 111
Meanwhile nine laptops were stolen from Coppull Parish Church of England Primary School on Monday 6 at around 8pm.
Two intruders were caught on CCTV forcing their way into a classroom before making off with the laptops stashed in pink bags with ‘teachers are cool’ written on them.
Anybody with information can contact the police on 101 quoting SC1700931.