Describes the efforts, outcomes, and recommendations from an urban California school district's pilot program for vaccinating preteens in two diverse urban middle schools. Barriers and strategies included staff inexperience, educating students, informing parents, tracking vaccinations, coping with language diversity, and creating individualized followup. Recommendations include: collaborate, educate, motivate, translate, vaccinate, "exclud-iate," tabulate/evaluate, and celebrate. (SM)