I am a tenured instructor for a community college. I don't know which state you are from. I am from CA and in CA, our Board of Registered Nursing (BRN) regulates all of our nursing schools. One of the requirements to teach is that you must have recent experience in the field that you want to teach prior to getting approved to teach in that field. The BRN will then certify you as eligible to teach that subject matter. I agree that it would be a huge liability to take on a job you are not equipped for. How can you teach something you don't know? (Asked kindly not meanly.)