I submitted my application through my school's on campus recruiting system and was contacted within 2 weeks. I had 2 back-to-back phone interviews, each lasted 45 minutes. They asked mostly behavioral questions related to common competencies of an HR professional or a participant in a leadership program (decision making, project management, communication with difficult people). I was toldby the recruiter who set up the interviews to expect behavioral and case interview questions, but they did not ask any case-style questions (thankfully). Both of the interviewers were very friendly and professional.