I went through 5 phases prior to hire.
1) Phone Call to discuss qualifications, background, experience and interest
2) Initial interview with Manager to discuss scope of position and to see if I was a viable team member
3) A third interview with key staff and senior instructors - training sample was assigned for a followup teaching trial that I was scheduled to preform before training team members and management
4) I was required to do a instruction sample using software manuals provided by the training center on a Microsoft Office Application
5) Final call from HR - recruiting manager to discuss offer and accept