Guidelines for developing an outdoor, educational laboratory are offered in this booklet. Stress is placed on establishing a laboratory that can be used with all aspects of the school's existing curriculum. Items regarding organization of a planning and guidance committee, user requirements, construction considerations to maintain the natural environment, and unique design features are elaborated. Also included is a checklist to aid in identifying environmental-conservation activities that can be conducted on school property, a bibliography, and a sample layout plan for an outdoor laboratory. (BL)