On any cool or cold day, at least 75% of my students are wearing hoodies. Of course, the big thing now is to stealthily reach over and fill your neighbor's hood with paper or something lightweight so the neighbor will pull it over his head and get bombed.
Once it actually cools down (50 degrees isn't that cold), I wear mine all the time. I have two I switch around, but they're starting to show how much I've loved them.