Most people associate summer with activities that have nothing to do with school, or, if they do, summer school comes to mind -- the remediation variety. Historically, summer school is for struggling students who need to relearn and firm up skills from prior years or for those required to retake a class. But what if it could be reimagined how to use the summer months to provide effective, engaging learning opportunities for students, especially those who were hit hardest by the pandemic? Some districts are shifting to evidence-based summer programs that move from remediation to acceleration in a climate that prioritizes equity and supports well-being so that all students can thrive. This article offers a framework for the components of effective acceleration, explains the role of highquality professional learning, and provides examples of school systems that are making it happen through a summer learning network led by FHI 360, an organization whose education initiatives aim to dismantle obstacles and give students the tools they need to succeed in school. These summer learning approaches are connected with school-year learning, and the lessons we are learning from them have implications for professional learning with and for school-year teaching staff.