Overworked and undernourished
This is my first post. Was mildly excited about it until I wrote it, and now I know I just sound lame. Anyway.
My husband and I work and go to school full-time, so we eat out almost every day. My bank account and inner wanna be chef can't stand it anymore. I've tried to do the cook-all-day-Sunday-for-the-week marathon, but that takes all day and I really haven't the energy. What are some of your suggestions for make-ahead meals that can be heated at work and eaten en route to school?

Thanks for the suggestions, everyone! I love some of these ideas. I get home at about 10 (class ends at 9:15, I'm about 45 minutes away from the damn campus) so I'm really impartial to the freeze-and-go meals I can make on the weekends.
@Texas Monkey, I'm also scared of using the crockpot when I'm not somewhere nearby to keep an eye on it. I don't know I would explain to my landlord that I just came home and my kitchen was burned down.
I work at a hospital with a strong emphasis on healthy lifestyles for its employees, so access to healthy food during the day is not a problem. It's the food I eat on my way to school that has me in tears.
@AnnieNT I used to cook meals and store them in the fridge or freezer: rice, beans, chicken stew, pastas, pilafs, fried rice, meatballs, pita pizzas.