Officials are investigating a video showing a school police officer slamming a student to the ground, echoing similar incidents in recent years.
Speaking at a ceremony at the University of Baltimore, the Fed reserve chief said that there are plenty of good jobs out there, but they require degrees.
A new report looking at Head Start programs in every state found that quality varies widely, and called for increased investments to improve services.
The US ranked 35th in math on an international exam given to 15-year-olds in 2015. But some experts warn the American education system is too varied to make sweeping comparisons to other nations.
US 8th-graders posted their highest math scores ever in 2015, but did not improve relative to students from other higher-scoring nations.