The parents pay for the boarding school or PG year. Most will get some kind of grant or financial aid to attend, unless their parents are in the 1%. Any private schooling is an investment no matter where you go, but I guess it’s up to each family to decide the level of financial commitment they are willing/able to give their child. I only know of our situation 100%, but I imagine most really good players at any boarding school are getting fairly generous grants to help to attend their school. Just like college, few pay sticker price. We are forever grateful to my sons school, best decision we could have made for him.