I had my interview scheduled for whitehat jr teacher and was rejected in demo session round 1 mainly because my work timings did not fit their criteria. Had I been informed about the suitable work timings during the initial screening where they asked about my background and work timings, I would not have wasted time in preparing for the interview and attending demo sessions. So they rejected me without even conducting the scheduled interview.

It has 5 rounds. Coding knowledge is must. They will provide you a material and you have to deliver all the contents given in the material as if you are teaching a kid. The interviewer himself will behave like a kid.