Runcorn Heights State School and Dutton Park State School tuckshops are being forced to close amid rising food costs and a shrinking number of volunteers. 

Dutton Park P&C president Katrina Cutler says there are not enough volunteers to sustain regular service and predicts more canteens will follow suit.

P&C Queensland chief executive Kevan Goodworth says tuckshops have been forced to reduce opening hours, employ staff and outsource operations to manage the amounting pressures.