* Grade level: Elementary school teachers might work closely with a smaller number of students (20-30) but also interact with their parents, other teachers, administrators, and support staff. High school teachers might have a larger number of students across multiple classes, but potentially less direct interaction with parents.
* School size and type: A small, rural school will have a different dynamic than a large urban school with specialized programs.
* Teaching role: A classroom teacher's interactions are different from a special education teacher's, a guidance counselor's, or an administrator's.
* Extracurricular activities: Teachers often take on additional responsibilities like coaching sports teams or leading clubs, which increases the number of people they interact with.
In short, there's no single answer. A teacher might work with dozens, or even hundreds, of people in a given year.