Parking in Kaiserslautern

[Bier_me 10]

Does anyone have any recommendations for either free or cheap parking in Kaiserslautern? I'm going to be taking a German Integration Course at the Volkschule in K-town and it will be 4 hours a day, 5 days a week. If I park at the nearest parking garage, that would be 8 euros a day, 40 euros a week, and 160 euro a month. I'd rather not have to pay that for 6-8 months of schooling. I don't mind walking further if there is somewhere cheaper or free. Just seeing if anyone knows of a good place or at least cheaper options.