Betsy DeVos spoke recently at Harvard and asserted that charter schools in her home state of Michigan generally get better test scores than traditional schools.
A 2016 report by Politico, however, said:
Despite two decades of charter-school growth, the state’s overall academic progress has failed to keep pace with other states: Michigan ranks near the bottom for fourth- and eighth-grade math and fourth-grade reading on a nationally representative test, nicknamed the “Nation’s Report Card.” Notably, the state’s charter schools scored worse on that test than their traditional public-school counterparts, according to an analysis of federal data (emphasis added).