We are not at school yet. DS will start in 2017. We have made our decision though. We looked at both private and public schools. We were looking for the right fit for our son. The right fit happens to be a private school., not because I particularly want him to be privately educated but want him to be happy at school. If we feel that it isn't the right fit anymore we would have no hesitation in moving him - either private or public.
Both DH and I were publically educated. I have post graduate qualifications, DH left after his A levels (he is English). DH earns about 3x what I can!