The After-School Corporation (TASC) provides a description and lessons learned from one of the nation’s largest, longest-running efforts to offer teens high quality, structured after-school programs, filling more than 40,000 seats over nine years in New York City public high school after-school programs. Older students who participate in after-school programs significantly improve their chances for success, yet serving them effectively is one of the greatest challenges for the after-school field. The paper describes promising programmatic models; examines the situations in which they work best; and warns of possible pitfalls. Request a copy via email, or download via the link.