مدرسة مستقلة
When charter schools do not perform to expectations, they are closed. Charter school closures are believed to be the evidence of accountability in action. As of February 2009, only six Massachusetts charters had ever been closed (Boston University Residential Charter School, Frederick Douglass Charter School, Lynn Community Charter School, North Star Academy Charter School, Roxbury Charter High School and YouthBuild) - half of those were closed for academic deficiencies.