I was coming on after an afternoon of teaching to say that whilst the admissions process to Oxbridge is rigorous, it gives a good foretaste of study there. If these youngsters can hack it, they stand a good chance of being able to cope with the pressure of short but very intense terms.
I came on here as I have experience of 2 DDs applying, one successfully, and hoped that I could answer questions from parents. However, if people want to be rude, I'm off. For the record, I have not been on strike, nor has my school been shut for the 10 months quoted upthread. We were shut from mid-March until mid-June 2020 and from January to March 2021. That's not 10 months. In 2021, I taught all lessons remotely as all students have school-provided laptops, so they didn't miss too much. I'm sorry not everyone had the same experience - mine is a well-regarded state school.
Good luck to all the DC.