In their School Library Journal article, Summer Reading Programs Boosts Student Achievement, Study Says, Carol Fiore and Susan Roman inform us that "Based on the findings of a recent three-year study by Dominican University’s Graduate School of Library and Information Studies, we can confirm what many librarians have long suspected: students who take part in their local library’s summer reading program significantly improve their reading skills. In fact, we found that kids who participate in these programs are 52 Lexile points ahead of their peers who do not. Summer reading programs are also an antidote for learning loss. So instead of losing knowledge and skills during the summer months, kids who attend reading programs actually show gains."
Nov. 10 2010. http://www.slj.com/2010/11/students/summer-reading-programs-boost-student-achievement-study-says/#_