A Florida school district wants to know if a service-learning program would successfully engage otherwise uninvolved youth in order to improve their...

A Florida school district wants to know if a service-learning program would successfully engage otherwise uninvolved youth in order to improve their attitude toward community service. Depending on the results, they will implement a mandatory community service requirement for graduating seniors. They are currently planning on letting students voluntarily sign up for service learning. Draft a proposal explaining why a randomized controlled trial is a more appropriate evaluation method, as opposed to simply letting teens sign up for the program—addressing validity issues, costs, and what form of randomization would be most appropriate to meet their needs.