It was a stunning, costly indictment of a state with a vaunted reputation for school innovation and top test scores.
When the Obama administration recently rejected Minnesota's application for up to $250 million in "Race to the Top" stimulus dollars for schools, it cited the state's inability to dump bad teachers, to place the best teachers where they're most needed, or to find faster ways to get teachers into the classroom.
Harsh as that was, it wasn't the only recent blow. In January, the National Council on Teacher Quality gave Minnesota a D- on its annual report card grading teacher policies.
Federal reviewers say Minnesota has trouble even figuring out who bad teachers are. One reviewer wrote that the state's system to assess educators is so ill-defined it deems "97 percent of its teachers to be highly qualified."
The U.S. Department of Education's critique doesn't say Minnesota teachers are terrible. It contends that the system meant to produce and support good educators is broken and that the state may lack the political fortitude to fix it.
But pinpointing the problem, identifying its cause, and finding solutions is the focus of sharp debate among state officials, school administrators and the teachers' union.
"Unless the state and local unions have a willingness to roll up their sleeves, it just isn't going to work," said Charlie Kyte, executive director of the Minnesota Association of School Administrators. "And it would be foolish for the federal government to give a state like that a ton of money."
Representatives with the Education Minnesota teachers union say they've done plenty to police their ranks and to ensure they're doing the best job possible. They say they measure their success by what they hear on the classroom frontlines.