The average American child spends nearly 12,000 hours in school, from kindergarten through 12th grade. Thats a big chunk of time during which he or she can develop good (or bad) health habits. Happily, schools today are recognizing the many benefits of a healthy head start—and Health magazine wants to recognize the ones that are doing an A+ job. To find the health stars in Americas vast public school universe, we asked education officials in every state for their nominations; we scored those based on how they measured up to some tough criteria, and the semifinalists were ranked by our panel of experts. Congratulations to all of the inspiring winners!