Vicki Abeles is the author of “Beyond Measure: Rescuing an Overscheduled, Overtested, Underestimated Generation,” and director and producer of the documentaries “Race to Nowhere” and “Beyond Measure.” She recently wrote an important article in the New York Times about the mental toll on children caused by testing pressure. She asks, “Is the drive for success making our children sick?”

She writes:

STUART SLAVIN, a pediatrician and professor at the St. Louis University School of Medicine, knows something about the impact of stress. After uncovering alarming rates of anxiety and depression among his medical students, Dr. Slavin and his colleagues remade the program: implementing pass/fail grading in introductory classes, instituting a half-day off every other week, and creating small learning groups to strengthen connections among students. Over the course of six years, the students’ rates of depression and anxiety dropped considerably.

But even Dr. Slavin seemed unprepared for the results of…