1-I have seen Jeff.
-How is he? Is he as good-looking as Mary says he is?
2-I went to high-school with Jeff.
-How is he? Is he a nice guy?
3-I used to work for Jeff. He was my boss.
-How is he?
(How=what kind of a person is he in his capacity as boss, etc.)
Would you say that the sentence 'How is he?' is natural in all of the above contexts?
That should be1) What do you look?
How do you look? or
What do you look like?
not a teacher