“Academic rigor” is heralded as a central tenet of a quality academic experience. Schools tout it. Parents want it. Governments legislate it. The 1983 report, A Nation at Risk, sought to establish that the U.S. education system was enmeshed with mediocrity and called for increased academic rigor as the antidote. More than 30 years later—and as evidenced by the frequency with which “rigor” or “rigorous” appears on public and private school websites and strategic initiatives—“rigor” is still perceived to be a prime mechanism by which schools might improve student achievement.