As stated, some do, some don't.
Funnily enough, sometimes caring for a pupil can backfire on both child and teacher! Take for examples my daughters teacher. This is her first teaching post and she's obviously gone into it a bit green. She's shown great interest in Mini Boo and the feeling's reciprocated, Mini Boo positively adores her. Great you might think! But no, im the one with tears as it's suddenly occurred to Mini Boo that she'll be moving up a year in September, but the teacher won't be moving with her.
Now we've both to deal with a sulky truculent 10 year old :-(