Webplaybook to help get and keep all children in the game by age 12—whatever the game, whatever the form. The playbook calls for systems change, starting with the groups that. Webover the past two years, project play has convened more than 250 thought leaders in a series of roundtables, identifying strategies that can address barriers. The initiative aims to make. Websport for all, play for life: A playbook to develop every student through sports offers eight strategies to help principals and school leaders update the traditional high school. Webwhy do so many sports teams have losing records, year after year? Why do others win big, but only every 20 or 30 years? And why is it that so few teams enjoy sustained,.