I submitted a resume through my school's career services and then had a phone screen with one of the recruiters. I basically walked her through my resume and then had time at the end to ask questions about Discover, the program, and what sorts of projects interns get to work on. After this there was a super day with a pre-interview dinner one night, and then 3 one-on-one interviews, a group discussion led by one of the recruiters, and a group activity that had us come up with some ideas about how to improve Discover's operations and then present our findings to the current employees. The one-on-ones were mostly behavioral, but one of them had a short case portion that was pretty simple (basic math and reasoning). I actually never even heard back about this position (which was surprising considering they paid to fly people out and put us all in a hotel for the super day), but didn't care to try following up because I found something else. I just thought that was bad etiquette on the part of the recruiters.