Now the federal government wants to run the classroom. Not just what’s taught, who gets tested for what or what gets served for lunch, but who gets punished for what and how. Now Washington dictates on discipline. That was the clear word out of Frederick Douglass High School in Baltimore yesterday as the attorney general and secretary of education announced new federal guidelines and mandates on school discipline. The goal? To disrupt the “school-to-prison pipeline” which Eric Holder and Arne Duncan say plagues our nation. Specifically, to eliminate what they call racial disparities in discipline. It turns out that black...