Perhaps you feel, as I did when I worked in a school, that while teachers develop service projects with the best intentions, they make no effort to build on what is known about effective service learning, nor do they align their work with other service in the school. As a result, my school was full of feel-good, superficial activities and little curricular coherence.
Abilock, Debbie, "So Close and So Small: Six Promising Approaches to Civic Education, Equity, and Social Justice" (2006). Civic Engagement. 18.