GORHAM — The University of Southern Maine says U.S. Sen. Susan Collins will be one of the school’s two speakers at next month’s graduation ceremonies.

Collins and Mary G.F. Bitterman, president of the Bernard Osher Foundation, will deliver speeches at USM’s ceremonies on May 11.

USM usually holds its commencement at the Cumberland County Civic Center in Portland. But the arena is under renovation, forcing the university to instead hold two ceremonies at the Costello Sports Complex on USM’s Gorham campus.

About 1,000 graduates are eligible to take part in the ceremonies, scheduled for 10 a.m. and 2 p.m.