Massachusetts Interscholastic Athletic Association

The Massachusetts Interscholastic Athletic Association (MIAA) administers statewide boys’ and girls’ high-school lacrosse, including power rankings, tournament brackets, results and state championships across four divisions. In 2026, the boys’ champions were Boston College High, Longmeadow, Scituate and Cohasset; the girls’ champions were Concord-Carlisle, Walpole, Cohasset and Sandwich. The boys’ tournament included 142 teams and applied the MIAA statewide power-ranking qualification format.