Corps Security has been re-awarded its contract with Walsall College for another five years.
The continuing partnership involves static guarding, control room management, patrolling, front-of-house security and student services assistance across all four campuses.
Walsall College, in the West Midlands, has been rated outstanding by Ofsted and is the largest provider of courses in the borough. The college's main campus is in Wisemore, with other sites in Green Lane, Whitehall, Cannock and Leamore.
A team of 16 officers, as well as a dedicated security manager, will continue to work across the sites.
Mike Bullock, CEO of Corps Security, said the firm had "built strong working relationships with the organisation".