I have had an issue essentially "re-training" students enrolled who have had experience in the field previously and now are seeking certification. While have industry experience is helpful sometimes, I find that they fall back on "the way my clinic does it". My solution has been to acknowledge that yes, there are many ways to do a task, however our curriculum is setting a standard to enforce consistency between classes and instructors. There is also a standard of care that we must provide. It can be frusterating to have them continually lapse into the bad habits they have picked up "on the job".