This book is a powerful resource designed for busy teachers who want to immediately improve their English language teaching practice. "ELT Power-Ups: Just-in-Time Professional Learning for Teachers of Multilingual Learners of English" is your practical guidebook designed to provide K--12 educators with immediate and accessible professional learning opportunities. This book offers adaptable approaches, time-saving solutions, and downloadable resources to help you engage in your own professional development--or facilitate professional development sessions for other teachers. Whether you're a general education teacher, an English language development specialist, or a professional learning provider, this book equips you with the tools and knowledge to better serve your multilingual learners of English. "ELT Power-Ups" is your key to unlocking your teaching potential and empowering your multilingual learners of English!