Although many English language learners (ELLs) in the United States have knowledge gaps that make it hard for them to master high-level content and skills, ELLs also often have background knowledge relevant to school learning that teachers neglect to access, this author argues. In the Common Core era, with ELLs being the fastest growing population…

United States policymakers have taken measures to improve learning for all students emphasizing the use of scientifically based research in choosing educational programs to promote school improvement and student learning. However, educators, researchers and policymakers debate about which factors are most important in affecting student…