I think makeup is fine in moderation. As long as you don't wear like full contouring, fake eyelashes, smokey eyes and stuff like that for just lessons or popping into a store I think it's fine.
I had a classmate who spent about an hour on makeup every morning just to get ready for school. Like full on face with fake eyelashes, blush, bronzer, lipstick, light colour eyeshadow, even coloured contacts most of the time. That's just too much for a normal day.
Personally, if I'm really sleepy or just going to the store I won't wear any. If I am wearing something it's usually eyeliner, filled in brows and some lipstick. Maybe some primer and concealer if I look crap. Only time I wear full makeup is special occasions. Even if I go on a date, at most, I'll add some foundation and bronzer before doing my normal makeup. I'm 20 btw, just for reference.