We tried to anodizing a few years back in the off season and quickly realized we didn't want to ever deal with it during build season. It's a lot of prep to setup and if you can't keep an area setup for it, it's just a hassle. We purchased the home brew kit from these folks...
http://www.focuser.com/anodize.html
It's an interesting process to teach the students about. Keep in mind you still need to get the acid, power source, heaters/hot plate. Don't forget the gloves, goggles, and safety spill kit!!