Is this hypocritical?

I think the issue is that 17-year-olds are not legally allowed to smoke, and maybe also that smoking on school property is not allowed.  Smoking in your car, if you are legally old enough to do so, is not an issue; that teacher wouldn't be allowed to smoke in the bleachers or outside the front door, but doing so in her car shouldn't be an issue. 

Over the years this forum has been inundated with posts from anonymous users wherein the asker proceeds to complain that a teacher has somehow acted like a hypocrite and most of us have come to see each and every question posted anonymously and mentioning the word "hypocritical" to be nothing but repeater troll spam that ought to be completely disregarded. That being said, in most of the developed world, one needs to be at least 18 to purchase tobacco products, therefore a seventeen year old would be breaking the law if he or she happened to be in possession of tobacco. If any of this nonsense is actually true, then the teacher you saw smoking was doing so after school hours, and her behaviour, while not setting a great example, probably didn't break any rules. Lastly, parents tell their children not to smoke cigarettes, drink alcohol, use illegal drugs, or have sex all the time, yet many parents themselves do some of those things. Have you never heard the expression "Do as I say and not as I do"? Are you suggesting that I'm being hypocritical when I send my toddler daughter to bed at 8:30 while I routinely stay up until 11? Get real.  

Actually it is illegal for 17 year olds to smoke.

Students smoking is a violation of the rules.

Teacher smoking is not an offence, may not be subject to  interference of the school management.

Anyway, teachers are human but they need to set a good example.

you can transfer school for her.

this is about your daughter, not the teacher. your daughter is a child and your responsibility. since you're choosing to go after the teacher, who is an adult, for smoking, it's little wonder your daughter is acting irresponsibly. you, the school and the teacher need to be a united front for your daughter, to impress upon her the seriousness of her behavior. 

Do you not understand that it's illegal for minors to smoke cigarettes? Do you consider an adult that drinks punishing their underage child for drinking to be hypocritical?