It is just a one day assessment process. You'll know right away if u you are hired or not. There are 2 batches of interviews and a reading assessment. After that, they will assess how strong your vocabs and how well yiu contruct a sentence. Disclaimer: process and questions varies depends on the interviewer.

The interviewer is very friendly, they will ask various questions and do a simple scenario of acting as a teacher and student. It was a good experience do I didn't pass the interview but they friendly. You will just have to be always prepared.