I just check the site you refer at

“Boarding school is the antithesis of homeschool, so I’m not sure why you are asking here.”

The word “homeschool”, and the phrase “home school”, refer to the practice of parents or guardians choosing to educate their children in the loving environment of home and family. Boarding school refers to the practice of sending children away from the home to live at a school during the school term. They are complete opposites.

I am not judging parents who send their kids to boarding school, but I am just pointing out that it is not the same thing as homeschool.