Substitute teacher::  Is that Japanese? Me:: No, it's Nigerian. Sub:: Isn't that in Africa? Me:: Yes. Sub:: But you're too cute to be African! I was in Pre-K, and she had just taken attendance.
That sounds awful. She shouldn't have assumed that about you.
Yea
It's important to report such instances to the school. No one is allowed to discriminate against you by how you look especially if they are teachers.