“Several years ago, we partnered with CPS and a non-profit tutoring provider, Saga Education, to provide CPS students with 50 minutes of two-on-one instruction per day in school, every day of the school year. The results were dramatic. Using a study design of the sort that provides gold-standard evidence in medicine, we found that 9th and 10th grade students learned between two to three times what they’d normally learn over the course of a year. That’s the equivalent of closing up to 50 percent of the Black-white test score gap in one academic year.”