Only stutter with teachers, girls or some selective peoples.

Only stutter with teachers, girls or some selective peoples. I do not stutter when I talk to my parents, friends (both male and female). I stutter while talking to my classmate girls, teachers, and some people who just don't feel good or smth idk. I didn't even shuttered in my childhood. Is that social anxiety? But I don't think so. It's not for everyone. Like I stutter to some random persons not every random person. I would not sutter if I have good connection with teacher. Hope u understanding what I mean.