Very Casual usually works if you have had a few classes with the Professor. Honestly there really was no interview I just recommend taking a few classes and be passionate about the subject your Professor teaches.

Submitted application, resume, cover letter, and official transcripts. This was combined with academic performance in undergraduate and graduate studies to create a holistic representation of skills. No interview was required for this position. Was notified of position offer via email. Training started 3 weeks later.