Nashmire is right, have a lot of information meetings, dorm talks, whatever to spread the word, find out when your school is having their job fair and advertise as much as you can before hand. Talk to everyone you can, don't advertise too far in advance because the level of interest will decrease by the time the job fair starts but start a few weeks before and have some of the meetings then and tell everyone to stop by the table or tent to at least see what we have to offer. Get as many some former employees together and have discussions explaining the variety of jobs, the people they meet, and the social life that is available.