Alex Cohen is the Director of Learning and Evaluation for the Richard M. Fairbanks Foundation. High-performing school leaders have a substantial impact on student achievement. Studies that aim to isolate the impact of leaders on student test scores find that moving from a low- to a high-quality principal can mean several additional months of learning. […]

According to @nberpubs, statewide Tobacco 21 (#T21) laws that prohibit the sale of tobacco products to people under the age of 21 appear to be having their intended outcome of reducing youth tobacco use.