If you are not sure how to answer this question directly, try to explain in the following way:
There are two ways of speaking, public speaking and face-to-face communication. I teach both..., etc., etc. Then tell how you teach and what assessment criteria you apply, and how you motivate your students. Also, what material you use...
You can add that you divide your class into three language proficiency levels based on the results of the diagnostic test that you give them during the first class.
You will find more ESL job interview questions with recommended answers here.