New school buildings often grab headlines that highlight their green features and LEED (Leadership in Energy and Environmental Design) certification, yet nearly 90% of schools in the United States were built before 1985, with the largest portion built from 1950-69 to accommodate the baby boom generation (National Clearinghouse for Educational Facilities, n.d.). The children and grandchildren of the baby boom generation move into those older classrooms eager to learn how to address the environmental challenges that confront them daily. They are the central force of a green schools revolution that is creating and implementing green policies and procedures in older school buildings. The "new" green schools engage students in solving real environmental challenges and organizing efficient operations while learning key skills and concepts in core disciplines. In Alameda County, CA, 30 middle and high schools enrolling more than 38,000 students from 10 school districts participate in the Service-Learning Waste Reduction Project (SLWRP). Funded by StopWaste.Org and organized by the Alameda County Office of Education, SLWRP provides professional development and networking for teachers and school staff members who want to engage students in environmental stewardship using service learning as a teaching method. SLWRP emphasizes student learning and action through service experiences that address environmental challenges on individual campuses and in the surrounding communities.