The university (and students, too, in a way) measure success with deliverables, quanitifiables. So, while I understand the importance of my program's numbers (number of student participants, community partners, and total hours of service), it's harder for me to show visible results. I can't point to trees that weren't there before. I can't show you rising (falling?) saline levels in the water. And I can't tell Monsanto, "In exchange for your resources, I will give you photos for your annual report and corporate social responsibility webpage."
Maybe you can "see" Spanish CSL more clearly than I can. What concrete objects could symbolize Spanish CSL? What items could we measure and quantify to show the "before" and "after?"