I know I'm a bit late, but I too was on the improv team when I was in high school (a 3rd stringer, but still...). I use that experience constantly in my training work. Particularly those days when a class doesn't go as planned.

I think EVERYONE in education, particularly those of us who have to do face-to-face work should spend time in improv class. I learned more about thinking on your feet during those times (and listening to what is going on around you) than during any "formal" course.