The blaze, caused by some firecrackers, took place last night though the incident came to light this morning, SP Jaipur (Rural) Rameshwar Singh said.
Some study material got burnt after a carpet kept in the place caught fire, he added.
Locals gathered and demanded probe into the matter.
A case has been registered and the matter is being investigated, the SP said, adding that policemen have been deployed in the area as a precautionary measure.