When I was in grade school all the teachers/principals were women. It was not until Junior and Senior high that we had any male teachers or principals.
In my elementary school one of the two 4th grade and 6th grade teachers were men (all straight), my orchestra music teacher and gym teachers were men. Great guys, nice but didn’t take crap from anyone. Middle school several teachers were men, high school lot more men teachers.
In general, with some exceptions, men prefer to teach young people when they are at ages that can handle more complex ideas and need more advanced thinking and skills. They are generally geared more to not be younger child raisers, but to train apprentices that older kids are in the age range of. Even the elementary school guys I had were in the higher grades.