This year will be an extremely challenging because of COVID. Note I am assuming your son has mostly A’s or equivalent and good recommendations from his teachers. As you probably know, he is too young to be “recruited” for hockey, but maybe a school coach will still drop a note to admissions. Everything helps when there are lots of applicants and not enough spots. Have you corresponded with any of the coaches - not too late? Thayer and Dexter, in normal years, would both go your way. This year, you may go 1 for 2. Sorry to keep talking hockey, but he may never see the ice at those schools. Their hockey is more competitive than their academics (which is somewhat competitive). Of course, he will have middle school options and maybe that is all you care about right now. Rivers will be more challenging than those two, but 6th grade does offer your greatest odds (about 25% admissions this year is my estimate), I give you a 1/3 chance at Rivers. BB&N would be slightly tougher than Rivers and there will be an extremely low likelihood for your son to gain admissions to Milton. I really hope this year goes better than I think it will for applicants.