My husband is reluctant because he believes he will be around children who may not be as advanced in some aspects, and therefore, may be complacent or more reluctant to continue learning at his current speed/ability.
Jai, I haven't had time to read the other responses, but fwiw I think it might help to look for preschool as a chance to expand your ds' intellectual curiosity in new and different ways rather than thinking of it as a reading/academics factory... it sounds like the school you're considering includes things that your ds would enjoy and that would also be intellectually stimulating - and it's only 9 hours per week. I wouldn't sweat whether or not your ds will be given help with higher level academics - you can still do those at home if you want to.
Best wishes,
polarbear
