David Sedaris, what are you thinking!?

David Sedaris is a homosexual man who grew up in rural North Carolina. As a child he was put into speech therapy for a lisp and frequently felt embarrassed by both his teacher and his therapist. This embarrassment eventually led to his resentment for the teaching profession.
As an adult we begin just before his first day as a part time teacher. David takes this job (which he is knowingly unqualified for) simply because he wants an excuse to wear a tie and be known as "Mr. Sardis".
These childish desires lead this insecure man into some very awkward moments. Though he disdains the teaching profession, he is eager to buy a briefcase and come to class with maple leaf name tags. To me, David Sedaris clearly does not know what to do with his life. He obviously does not have a passion for what he does. We can clearly see this by his lack of meaningful lesson plans.
David realizes that he does not belong in teaching. To his students he tries to portray the image of a highly educated teacher. To other teachers, he simply want to avoid being considered a fraud. Despite having the one-time fantasy of becoming a "distinguished academic", it seems as though David thinks realistically of himself.
Davids students are the only characters who opinions of David we know. At first he seems to fool them into thinking that he is a legitimate teacher. This does not last long though as "Mr. Sardis" has no lesson plans, assigns meaningless essays and demonstrates his authority by opening and closing his classroom door. However after the repeated use of soap operas as lessons, his students begin to turn on him. Knowing his childhood experiences, as well as his motives for teaching, it was not a surprise that he was unprepared for his job.
To me Mr. Sedaris sees teaching as another phase in his life, or, in other words, as a stepping stone to something better. Yes, that's right David, both you and I know that this is not the career for you!