"Some aspects of the American school system are not helpful in improving education quality and equity. First, education in the United States is too much defined by testing and data. If getting the data using frequent standardized tests occupies up to one-third of all available time to teach, that will alone prevent students from making the marks they should.
"Second, American education places too much faith in marketplace choice, which parents have because of expanded access to charter schools. This weakens the public school structure that is fundamental to many successful education systems elsewhere.
"Finally, more students in America have novice or nonprofessional teachers in their classrooms today than ever. Frequent turnover of teachers in thousands of American schools undermines the entire education system."