In this Issue:

• Participation Over Time: Keeping Youth Engaged from Middle School to High School
  By Sarah Deschenes, Priscilla Little, Jean Grossman, and Amy Arbreton
  
  
• Using Professional Development to Enhance Staff Retention
  By Denise Huang and Jamie Cho
  
  
• The Changing Landscape of Afterschool Programs
  By Kathryn Hynes and Felicia Sanders
  
  
• Honoring 15 Years of the 21st Century Community Learning Centers Program: A Polity-Centered Analysis
  
  
• A System That Works: Highlights of Effective Intervention Strategies in a Quality Improvement System
  By Diana Sinisterra and Stephen Baker
• New Faces, New Places: A 4-H Science Learning Program in Urban Out-of-School Settings
  by Walter A. Barker, Eric Killian, and William P. Evans
• Can We Talk? Creating Effective Partnerships between School and Afterschool Programs
  By Lisa Sweet Dilles