The Earth Island Institute’s KIDS for the BAY’s (KftB) Four Rs Action Program is a hands-on environmental education program for third, fourth, and fifth grade students and their teachers. The participating classrooms join a KftB program instructor for a year long program. The program includes five two-hour long workshops focusing on reducing, reusing, recycling, and composting waste; in-class mini-action projects that reduce waste and conserve resources; a year long waste reduction action project that students choose, plan, and implement; and training and support for teachers. KftB uses formative and summative evaluation methods to collect data from students and teachers to measure the impact of the program on both groups and the effectiveness of the program content and delivery. Results will be used to improve the program and inform future evaluations.