This curriculum was written for youth organizations and secondary students in the County of Sacramento, California to develop their ability to: (1) recognize and evaluate how decisions are made about land use; (2) understand the roles of elected officials, property owners, citizens, and local governmental departments and agencies; (3) understand the ingredients of effective advocacy on a local issue affecting their community; (4) recognize the beneficial roles trees play in the urban environment; and (5) participate in a local decision to improve their immediate environment by the planting of trees. Activities are divided into three sections that cover the topics of: (1) becoming informed; (2) becoming organized; and (3) taking action. Each activity contains sections detailing objectives, methods (with references to provided worksheets), materials, background, and enrichment activities. Student progress is evaluated using a worksheet tracking sheet. The curriculum guide contains 24 references, a list of 34 resources, and a 66-word glossary. (LZ)