Students who graduate from a two-year community college in Massachusetts with a 3.0 or better grade point average will be offered free tuition at the University of Massachusetts Lowell. The program, announced yesterday, will begin in the fall semester. Students who earn an associate’s degree at one of the 15 community colleges and are seeking a bachelor’s degree could receive free tuition at UMass Lowell for up to four semesters. Students would have to maintain at least a 3.0 grade point average at UMass to continue getting the benefit. The school’s current annual in-state tuition is $1,454.