Less than one-third of children and adolescents in the United States are meeting the recommendation from the "2008 Physical Activity Guidelines for Americans" to get 60 minutes or more of physical activity each day. Schools can help students meet this national recommendation because close to 60 million children and adolescents attend school. Schools have also shown that they are capable of helping students get up to 20 to 60 minutes of physical activity during the school day. This finding underscores that schools are the most strategic and practical place for students to learn about and practice being physically active. The Whole School, Whole Community, Whole Child model can help schools strategically identify and promote policies, practices, and programs that increase physical education and physical activity. Within the context of this model, schools can develop, implement, and evaluate a Comprehensive School Physical Activity Program. This program involves coordination across multiple components, including: (1) Physical education as the foundation; (2) Physical activity during the school day (recess and classroom physical activity); (3) Physical activity before and after school; (4) Family and community engagement; and (5) Staff involvement. This report describes strategies for promoting and planning classroom physical activity. It also provides a list of practical resources to help school staff implement the strategies identified. [The writing team for this report includes: Brittany H. Chen, Mary Juergens, Kelly Hughes, Lina Jew, Kate Holmes, and Shannon L. Michael. This document was prepared in collaboration with Springboard to Active Schools, an initiative of the National Network of Public Health Institutes (NNPHI) and Health Resources in Action (HRiA) through a cooperative agreement.]