The head teacher is responsible for the overall management of the school.

There are many e-teachers in the online education industry.

I have been taking online classes with my e-teacher for the past year.

The substitute teacher filled in for the regular teacher who was sick.

The school hired a relief teacher while the regular teacher was on leave.

Relief teachers are often called in to cover for absent regular teachers.

Substitute teachers are needed for tomorrow's classes.

The head teachers are responsible for managing the school.

The teacher-centered approach to education puts the instructor at the center of the learning process.

The teacher's aides help the students with their assignments.