Sorry I don't really have any ideas because I'll probably be in the same situation in a year when I leave to college. I have a rabbit, 4 chickens and 7ducks which my parents have said they won't take care of after I leave. I have no idea what I'm going to do because finding a really good home for chickens and ducks has got to be near impossible.
The only thing I can think of that you could do is post an ad in the paper asking for a good home for them and then ask to meet potential adopters and their homes to make sure they are nice and are able to care for them properly. If you are able to find a home for them you could also ask the people for regular updates on how your pets are doing.
If you are wanting somewhere temporary for them until you are done with college, maybe you could ask a family friend or someone if they are willing to care for them if you say you will pay for food, vet bills, etc.
Sorry I wasn't of much help, but hopefully other people will respond with ideas or experience with this issue.