United States Botanic Garden, the National Association for Appropriate Technology and City Blossoms developed this freely available manual in response to an expressed need to help guide would-be greenhouse managers and educators as their schools explore ways to build new infrastructure or reinvest in existing greenhouse facilities. Its purpose is to support and expand the planting and use of school gardens and greenhouses, Farm to School activities, and the integration of plant science in the curriculum. The manual lays out a basic understanding of greenhouses, how to integrate greenhouses into lessons, and how to use greenhouses in classroom curricula and after-school activities.