TY - JOUR AB - The field is generally aware of the summer learning loss (SLL) phenomenon. However key characteristics of SLL are not broadly established. What proportion of students’ school-year gains are lost in the subsequent summer? Is the magnitude of SLL generally similar across students or across grades? We describe the role summers play in the end-of-schooling achievement disparities using a unique dataset that spans eight grades, 200 million test scores, 18 million students, 50 states, and school-years 2008-2016. On average, 19% of students’ pathways from their 1st to 8th grade test-score occur during summers. We show that—even if all inequality in school-year learning rates could be eliminated, students would still end school with very different achievement due to SLL alone. AU - Atteberry, Allison AU - McEachin, Andrew DA - June 2019 PY - 2019 ST - School's Out: The Role of Summers in Understanding Achievement Disparities T2 - EdWorkingPapers.com TI - School's Out: The Role of Summers in Understanding Achievement Disparities UR - http://www.edworkingpapers.com/ai19-82 ER -