This handbook presents information for the use of Washington State school districts and schools in the development of physical education programs that conform with Federal and State regulations regarding sex equity. It consists of five major sections which provide, respectively: (1) State legislation pertaining to education, physical education, and sex equity; (2) a step-by-step guide to developing, at the district level and at the individual school, a high-quality co-instructional curriculum; (3) a list of educators who serve as physical education resource consultants in Washington State; (4) a descriptive list of successful co-instructional programs already existing; and (5) an extensive bibliography, partly annotated. An appendix includes a sample student interest survey form. (KH)