The OSNAP Change Model

The OSNAP Change Model walks you through a series of steps programs in our intervention have used to create healthy changes in out-of-school time. This is a comprehensive approach takes staff from start to finish as they assess the physical activity and nutrition environment, identify areas for improvement, learn in a series of collaborative meetings, build communication for healthy messaging, set goals for change, re-evaluate environments, and celebrate successes.

Click the topics below to learn more.


Begin with the self-assessment, assigning someone (site director, staff member or independent consultant) to make observations each day for one week at each out of school time program. This will give your team the most complete picture of how your programs align with OSNAP’s nutrition and physical activity Environmental Goals.

If it is not possible to complete the 5 day self-assessment given time or staff constraints, someone at each program can fill out the brief evaluation with their best guesses of the physical activity and nutrition offered to get a sense of whether your programs are meeting the Environmental Goals.

Complete the Policy Self-Assessment to evaluate what policies that support the Environmental Goals might be in place at each program.


Results of each assessment will lead to the Tip Sheets and Fast Maps, which can help programs identify ways to make changes to achieve the Environmental Goals.

Using the assessment results and Tip Sheets/Fast Maps, each program should complete the Action Planning Guide to specify goals, action steps for change, responsibilities, and timelines. Make sure programs set practice, policy, and communication action steps for each goal they are working towards. There is also space to specify barriers that might need to be addressed or additional resources staff may need to reach their goals (check out our resources page for great OSNAP, Food and Fun and external resources).


Powerpoint slides for 3 Learning Collaboratives are available here. You can use the slides, or the information within them, during staff trainings.


Make sure to communicate practice and policy changes to parents, children, staff, and community partners.

Parent education materials are available through Food & Fun After School and templates for communicating practice and policy change can be found on the OSNAP Resources page.


Use the Action Planning Guide to track progress on your programs’ goals, action steps and timelines

Look to Tip Sheets and Fast Maps and Resources for new goals and ideas for action steps.


It is important to re-evaluate to see how your programs are changing to impact kids’ physical activity and nutrition. Many programs choose to evaluate first at the beginning of their program cycle (e.g. the start of the school year) and then re-evaluate towards the end of their cycle (e.g.6-9 months later towards the end of the school year). To re-evaluate, fill out the self- assessment again, assigning someone to make observations each day for one week during out of school time programming. Comparing the results from each time period will give the most complete picture of the progress you’ve made towards achieving the Environmental Goals. Some action steps will take longer to complete than others, so feel free to re-evaluate as often as you would like.


Identify the action steps and goals your programs accomplished. Communicate these successes with staff, parents, and children via newsletters, meetings, or celebrations (See the Resources page for healthy celebration ideas). Submit your successes, including strategies for completing action steps and goals, to the Harvard School of Public Health Prevention Research Center.