For several years, ever since the No Child Left Behind Act took effect, students, teachers, and school districts have felt the pressure that comes from living in a nation that uses standardized tests as its sole method for measuring student proficiency. When too many students at one school perform poorly on these tests, teachers can be fired, principals replaced and schools closed. Hundreds of teachers were fired in D.C. schools because of poor performance by students on test. The stakes are high. But, no one would have guessed that the pressure would lead to alleged cheating on these exams.