The instructors can make or break a studio. Clients like a variety of teaching styles to choose from. It is essential the instructors conduct themselves in a professional manner. Professionals are on time, cleanly dressed, take their jobs seriously, and last but not least, continue educating themselves so they are up to date in their field of study.
VERY IMPORTANT! They should understand the class is not for them to stay in shape but to help the clients get through a class safely and effectively.
I hope that helps! Good Luck!!!