Nice try with the dig at homeschooling but all it shows is that you're hopelessly out of touch with reality of what homeschooling is all about and how the vast majority of people homeschool.
Perhaps you could explain, then, why colleges are doing everything they can to attract homeschoolers and why they have a special liaison in their admissions department to deal just with homeschool applicants?
I am not talking about socialization such as making friends, sports, behaving nicely, etc.
I’m specifically talking about kids working together on the same problem such a lab experiment or a big project. This is a skill that wasn’t even taught in any school until recently.