A simple virtual interview where they ask you about your background and motivation for signing up for a year, they may give you some scenarios to see what you'd do in a classroom setting.

A long, detailed phone conversation detailing experience in education, as well as personal education, whether public or private. A discussion of life experiences-- poverty and discrimination, gauging the applicant's ability to work in a community experiencing such hardships.

It was a phone interview conducted with an interviewer who seemed to be a current ACM working during school hours. Behavioral questions were asked and I was given ample time to respond.