The best, and most useful, cooking class we took in 2013 (well, it was the end of 2012, but we didn't post about it until January, so it counts, right?) was Chris French's "Pizza and Foccaccia" class at Manchester Community College. With so many helpful tips and recipes, we no longer look at these two delicious foods the same way.
Chef French runs 1-2 credit-free classes each semester - just check the online catalog under "Continuing Education." We'll probably see you there!