Project Learning Tree is an award-winning environmental education program designed for teachers and other educators, parents, and community leaders working with youth from preschool through grade 12.

At PLT, the goal is to teach students how to think, not what to think about complex environmental issues. Recognized as a leader in environmental education for more than 35 years, PLT enhances critical thinking, problem solving, and effective decision-making skills. PLT materials are multi-disciplinary and aligned with state and national education standards.

Studies show that when environmental education and outdoor learning components are integrated into curicula, student achievement increases, including test scores - particularly in science and math. More than half of all PLT activities can be conducted outdoors. Furthermore, independent evaluators confirm PLT increases students' knowledge, reasoning, and academic skills.

PLT inspires students, teachers, families, and volunteers to take personal responsibility for improving the environment at their school, at home, and in their community.  The goal is for students to "learn by doing."

PLT's GreenSchools! program provides a set of tools for students to analyze data and design a student-driven project to cut your school's costs, improve student health and nutrition, teach STEM subjects, civic engagement, and skills for the careers of the future. 

PLT's GreenWorks! grants fund these and other community environmental improvement projects. Past projects have included growing plants, restoring habitats, reducing energy use, conserving water, recycling, and making better use of school grounds.