This document provides guidance on effectively implementing professional learning communities (PLCs) in schools. It defines a PLC as a group of educators committed to collaborating to improve student learning. Key aspects of effective PLCs include having a shared focus on learning, working interdependently in teams to achieve goals, engaging in collective inquiry to improve practices, and being oriented toward achieving continuous improvement. The document outlines that the goal of PLCs is to ensure high levels of learning for all students and describes structures and commitments needed to function as an effective PLC, including clarifying what students must learn, monitoring learning, and providing support for students.