During the fall of the 2016-17 school year, first, second, and third grade students in six elementary schools -- two in St. Paul and Eagan, Minnesota, and four in Bedford County in the Piedmont region of Virginia -- were assigned to take part in randomized efficacy trials carried out for the purpose of rigorously evaluating the impact of…

The authors of the "No Child Left Behind Act of 2001" anticipated that a majority of school districts or schools would not be able to attain state and national achievement standards without assistance. Consequently, the Act created a major tenet known as Supplemental Educational Services (SES) programs to improve the learning outcomes of…