Three Chicago principals and the war against Fs

If you’re a principal intent on disruption, here’s one place to start: Ban Fs.

“Fs and Ds are worthless,” Principal Juan Carlos Ocon told a group of rapt educators Thursday. The principal of Benito Juarez Community Academy in the predominantly Latino neighborhood of Pilsen spoke as part of a panel on improving student performance at a conference hosted by the University of Chicago Consortium on School Research...