Prestige vs. Performance: How We Decode School District Value in Greater Boston

Our Value-Add Index uses Massachusetts' official accountability metrics—CPTIT and Student Growth Percentiles—to distinguish districts that accelerate learning from those that simply enroll high-achieving students. This methodology reveals that some 'elite' districts (like Arlington High School) are resting on reputation, while others (like Acton-Boxborough) deliver genuine institutional value-add.