As part of a symposium evaluating the prospects for eliminating sex discrimination in schools through institutional advocacy, network building, and planned interventions, this paper summarizes the successes and setbacks of sex equity advocacy in California. It reviews theories of innovation diffusion in organizations, documents their application in the advocacy of the California Coalition for Sex Equity in Education (CCSEE), and presents a series of vignettes from case studies to illustrate problems encountered, the change strategies employed, and projected outcomes. Based on the stages of the adoption and diffusion of a new idea, CCSEE has designed and presents a change model that includes a systematic process for problem-solving, identification, and resolution of barriers to the achievement of sex equity. (Author/MLF)