The National Summer Learning Project (NSLP), an initiative of The Wallace Foundation, consists of five school districts—Boston; Dallas; Duval County, Fla.; Pittsburgh; and Rochester, N.Y.—and their local community partners.The RAND Corporation followed nearly 6,000 students from the end of 3rd grade through the spring of 7th grade, comparing students selected to attend the summer program to those who applied but were not selected to attend.The new study reveals short- and long-term benefits of summer learning programs – especially for children in low-income communities – with high attenders in the NSLP experiencing the most benefits in mathematics, language arts, and social-emotional skills.