A committee that has been working on ways to alleviate traffic and parking issues around the complex of schools and municipal buildings at School and Wellesley streets will present its Greater Case Campus Master Plan Report on June 12 at the Community Center. The campus comprises the Country, Woodland and Field schools, the Case House school administration building, Weston Public Library, and the Community Center. The presentation, slated to begin at 7:30 p.m., will review the report's recommendations and findings. The Case Campus Master Plan Working Group has been developing its report with the help of a local architectural firm.