I was initially contacted by HR as a standard phone screen just to get to know me a little bit better and such. Through HR, I set up another phone interview with someone within the department and group that I was going to be working with. A day later, I was contacted by the manager of that department for the phone interview. She asked the standard interview questions; it wasn't very difficult. The interviewer was very enthusiastic and kind so I felt very comfortable. I should have been brought in for an in-person interview as well but I was in the middle of exams at the time and they were understanding enough to know that it would have been difficult for me to come in. The very next week, HR called me again to let me know that they were extending me an offer.