People debating school choice have long had a difficult time finding a comprehensive study to really show the difference between charter schools — publicly funded schools that are run independent of a district or union — and traditional public schools. In most instances, the variables are too numerous for anything to be conclusive. Charter schools seemed to be better, but only certain charters in certain states with certain kids during certain years.
Finally, a new study has come out that indicates charters are indeed generally better than traditional public schools. Tabulating the academic progress of 1.8 million charter school students, researchers at Stanford University’s Center for Research on Education Outcomes determined that these students were the equivalent of 16 instructional days ahead on English and six instructional days ahead in math. To make sure they weren’t comparing apples to oranges, these students “were each paired with a ‘virtual twin’ (i.e., a nearby pupil possessing similar demographic traits and prior test scores) enrolled at the district school that the charter student otherwise would have attended.”
Naturally, the gains varied from state to state and school to school. In states such as New York, Massachusetts, Tennessee, and Rhode Island, charter school students outpaced traditional public school students by more than a month of instruction in reading and math. Additionally, charter schools that operate under a charter management organization (CMO), like the Knowledge Is Power Program or Founders Classical Academy, did better than their non-CMO counterparts, particularly in math.
And before skeptics give
