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The Washington Post

How many ways did D.C. educators cheat on the 2102 high-stakes Comprehensive Assessment System tests given to students?

Just to be clear, because some have wondered, Michelle Rhee, then the chancellor of D.C. public schools, did see the memo about test cheating.

You don't investigate criminal activity by going in and asking, "Did you cheat? Are you sure you didn't cheat?" Everyone should have to testify under oath, including Michelle Rhee.

Students seem to have few qualms about cheating if the cheating seems relatively slight. What can teachers do? Cognitive scientist Daniel Willingham has an answer.