BANGOR — The University of Maine System says its 2013 budget under consideration includes no tuition increase for the first time in a quarter century.

The system’s trustees meeting Sunday and Monday in Bangor are reviewing an operating budget for the fiscal year that begins July 1. Tuition and the mandatory unified fee for in-state undergraduate students will be kept at current levels.

System officials say they’re presenting a balanced budget to the trustees despite a $2.3 million decrease in the state appropriation.

Other items on the agenda include continuation of leases for two UMaine Cooperative Extension facilities in Tenants Harbor and Bryant Pond, naming a UMaine baseball batting pavilion, and demolition of two structures at the University of Maine at Farmington.