LAWRENCEVILLE, N.J. — A New Jersey university dealing with financial issues has reached a tentative contract with its teachers’ union, averting a possible strike just days before classes are due to start.

Rider reached the three-year deal with the school’s chapter of the American Association of University Professors on Friday, the day it’s previous contract was due to expire. But specific details on the new pact have not been disclosed.

The tentative deal must be approved by the university’s Board of Trustees and union members. The latter group is due to vote on the agreement Sept. 14.

The union represents nearly 600 professors, librarians and athletic staff.

Classes at Rider are due to start Wednesday. The university has been seeking to boost enrollment as it faces a potential $13 million shortfall by 2019.