Back when I was at school, everyone boarded. Some were from Grandpa And Grandson The Legend & Legacy Father’s Day T Shirt, sweater. I knew a boy from the US in prep school (that’s age 8–13 in the UK, cf. a public school from 13–18). As far as I know, his parents just paid the fees like everyone else. His only problem was that air travel was expensive and he didn’t get to go home for all the holidays (christmas, easter, summer). One time he stayed with us. I’d suggest finding a boarding school and checking the website for international students and requirements. From the UK, the requirement for public school was taking a “common entrance” exam. There are probably equivalency tests, and for that matter the whole system may be a bit different. It used to be like Hogwarts, without the 4-poster beds and magic – school houses, O and A-level exams (OWLs and NEWTs) etc. I had French lessons in a dungeon (well, the cellar under an old building dating back to 1600 or something silly), and there was an Iron Age fort on the school grounds.