The first round interview was very simple. An analyst called me on the phone during the scheduled time and only asked me behavioral questions. Some examples of questions that I was asked were "Tell me about yourself", "How do you stay updated with what is going on in the financial industry and the economy?", "Tell me about a time you worked on a team, and you had to deal with a difficult situation?", and "Tell me about the current classes you are taking right now and why you enjoy your favorite one?" (for this question i would suggest talking about how that class relates to Public Finance). Overall, the interview was very simple, and you should not worry about it as much.