Boston charter schools outperform other public schools on three popular barometers of achievement — the MCAS, the SAT, and the Advanced Placement exams — but tend to have lower four-year graduation rates, according to a study being released Wednesday.
The biggest bounce in achievement occurred on the SAT. Charter school students on average scored 100 points higher than their peers in other public schools, according to the study, which was prepared by the School Effectiveness and Inequality Initiative at MIT.
The findings are expected to fuel a push to abolish a state-imposed cap on the number of charter schools. The study was commissioned by two philanthropic organizations that support efforts to expand charter schools, the Boston Foundation and NewSchools Venture Fund, headquartered in Oakland, Calif. Full story for BostonGlobe.com subscribers.