FOR THE CHILDREN™: New Study Shows Just How Much School Lockdowns Harm Innocent Kids. “The McKinsey report uses testing results from spring 2021, translating points-based scores into a “months-of-learning-lost” metric and comparing this year’s results to pre-pandemic levels. The results show that, on average, elementary school students lost the equivalent of five months—or half a school year—of learning in math, and four months in reading. Results varied by race and income, and unsurprisingly, students of color and from poorer families suffered most.”