Met at career fair at school. Had a preliminary interview at school the following day that consisted of mostly behavioral-based questions. Was asked back to the 3 day assessment follow up interview. The assessment felt more like a retreat, and I really enjoyed my time there. It consisted of a group project which was later presented in front of members of the company. There later were 3 interviews in a row. It's easy to get worked up about the whole process, but AD did a great job of connecting you with others going through the process. You're there with over 50 other applicants.