charter school
noun [ C ] uk/ˈtʃɑː.tə ˌskuːl/ us/ˈtʃɑːr.t̬ɚ ˌskuːl/
（美国的）特许学校（出于某种特殊原因而建立，公共出资的独立学校，只接收符合条件的学生）
in the US, a school that is paid for with public money but is organized by a private group for a special purpose and admits only students who meet its standards
They formed a charter school for girls who are good at math and science. 他们建立了一所特许学校，招收在数学和科学方面出类拔萃的女生。