I know you wish to help your students to learn and acquire English – you speak a lot in English, well, all the class-period is in English.
However you think you lack information about the students, you think you have a superficial knowledge of them.
I would tell you that you should arrange a date with their parents, and you’ll win more information from them. As you can see the teacher’s labor is huge – do your best anyway, as much as possible. / Photo from: www hometuitionmalysia2u com