No, the rear view mirror is not for make-up or hair checks. In the interest of fair play, both sexes are just as likely to use the rear view mirror for cosmetic reasons. The instructor sitting on the passenger side of the car is the person actually in control of the car. At this point the student is allowed to insert the key and start the engine. Not all students are a ride.
Some students never become a ride.
S o the next time you see a student driver car, give it the benefit of the doubt. Don't crowd it and don't play chicken. Say a little prayer for the person sitting in the passenger seat looking terrified. He or she is seriously thinking of a career change. And seriously hovering over that beautiful brake on the passenger side.