Love the advice @ChoatieMom. We never even dreamed our kids would end up at prep school until our oldest was halfway through 7th grade- when he “discovered” Exeter at a west coast public school assembly presentation- hence we didn’t spend any time preparing them for that journey.
We did try to install a love of learning, adventure, hobbies, work ethic and community involvement since they were tiny. So they would be good human beings.