M.B.
Teachers have to start somewhere..... sometimes the new teachers are the ones with the most patience and innovative ideas!
A lot of great teachers come out of different certification programs, not just a traditional certification program. If the principal feels that teacher is qualified, why do you think they are not qualified to teach?
(FYI..... I am starting a new career at age 58...I will be teaching for the first time in a classroom of my own. I have worked for several years in this middle school as a para. I am certified, and my principal has complete trust in my abilities!)