The Tri-Town School Union is Supervisory Union 58, consisting of three distinct school districts and communities in northeastern Massachusetts: Boxford, Massachusetts, Middleton, Massachusetts, and Topsfield, Massachusetts. Each district has its own teacher contract, school committee and budget. The Tri-Town School Union School Committee has representatives from all three districts' school committees. The vision and mission of the Tri-Town School Union is a singular, unified vision statement:

The Tri-Town School Union believes in nurturing a dynamic learning environment where creative thinkers and innovative problem-solvers develop the empathy, resilience, perseverance, self-management, and kindness needed to positively impact the world.