Learning Ecosystems Northeast (LENE) is a network of peer communities of teachers, librarians, and out-of-school educators who are collaborating to break down the barriers between in- and out-of-school learning. These peer communities—called Connected Learning Ecosystems or CLEs—share a commitment to climate change education and to building the next generation of environmental stewards. They also share a commitment to prioritizing relationship building between and among educators and institutions for the benefit of youth. Founded on the premise that diverse youth need a matching diversity of entry points into climate learning, LENE supports local educators to reach their learners by creating climate science and data literacy resources, designing professional learning opportunities, and providing a committed peer community. Working collaboratively, these local communities create investigations of climate change phenomena that are personally relevant for their learners, designed to span multiple learning contexts, and contextualized in larger regional and global climate trends to maximize impact. This chapter describes the network’s underlying principles around climate change education and highlights the practical, replicable strategies that are contributing to its success.