I can guarentee that you'll be asked to return for several interviews, even for this entry level position. I was asked to interview with six different indivduals and had to wait for a position to open. All interview questions were straightforward, nothing too bad. There is a drug test, math test, background check, and personality test.

Very standard. The first interview was om the phone asking a few behavioral questions. Then the in-person questions were more directed about the program. They tend to have positions opened frequently so it doesn't hurt to be proactive but id start looking a month before graduation.