I taught in the Ldn independent sector for years and was involved in group assessments, interviews etc. it is very obvious when a child is over-rehearsed and it makes it difficult for the interviewer to get a sense of the real child and their personality. You can usually tell when a child has been fed answers or is saying something solely in an attempt to impress. Whilst it is sensible to chat with your child about what they might be asked, you can end up shooting yourself in the foot with too much practice. Also worth remembering is that interviewers are not solely interested in what the child says, but in how they say it - in how they express themselves, develop answers, and how they respond to questions or new ideas. Part of the process (esp true of group assessments) also entails looking at what the child would be like to teach and at how they interact with their peers and each other. Bottom line: don’t freak out and be wary of over-preparing. Chances are your child will be fine - the fact you’re on this forum shows that you are engaged parents who are actively interested in their child’s education. That in itself goes a long way towards helping your child be ready and be able to articulate themselves effectively. Be reassured, also, that if you have a shy or nervous child, most interviewing teachers are very experienced at putting kids at their ease and at drawing them out. Good luck to all!