“As BARR spread, researchers tested the model by the gold standard: randomized controlled trials. And they found over and over again, it raises test scores and pass rates, reduces absences and suspensions, and students feel more engaged and challenged at school. The effects are particularly large for students of color, male students and students from low-income families.
Across big-city schools like St. Louis Park, there’s a 40 percent drop in failure rates from BARR, and in small rural schools it’s 29 percent on average.”