I remember my Highschool art teacher would play this annoying improv jazz whenever we would work on stuff. God, I really can't stomach good improv jazz so I can't imagine the horrible shit you had to listen to. Give me some good Duke Ellington and I'm a happy girl. But I really don't know how you managed to sit through that.
To be fair though, the professor teaching our jazz history class brought in a couple students from the music department whom he had never met before, and they all played improv just fine. Pretty impressive, even. So I figured I'd get more of that when I went, but instead my ears were raped.