The High School with the Competitive Edge! Established in 1977, Tri-County’s mission is to provide an excellent comprehensive technical and academic education to regional high school students. State-of-the-art technical skills and knowledge are enriched and complemented by a solid foundation of academic skills. Creative and cooperative partnerships between area employers and a dynamic staff at Tri-County guarantee the continued growth and development of exciting programs designed to prepare graduates for careers in the twenty-first century. This is a place where students succeed and are well-prepared for work or college. Enrollment at Tri-County is just over 1,000 students. Recognized as a 2007 Commonwealth Compass School Tri-County is accredited by the New England Association of Schools and Colleges. It is a member of the Massachusetts School to Career Initiative, a member of the Metro West Consortium on Technical Preparation, and a member of the Southern Regional Education Board’s High Schools That Work program.