If you have 6 kids and 24 hours in a day, that's 4 hours/kid if mom and dad never sleep or do anything else...so still less than an only-child schooled kid with 5 hours/day.

I understand that, but I don't think quality time has to mean 1 on 1. Me playing a card game with the oldest 2 is quality time with them. My wife does most of the schooling and stays with the kids, so they have a lot of time with her, and when they aren't spending time with their mom and I they are playing together, they have aunts and uncles and grandparents and cousins.

but no elementary school teacher is going to see anything close to 300 different kids in a year

you are right, I exaggerated, unintentionally, and that doesn't help anything.

A parent is an expert on his/her kid. A teacher is an expert on teaching kids.

I agree, and I love teachers, many friends are teachers, and it really has nothing to go with the teachers themselves, just the facility and administration. There are so many ways for kids to learn and there are plenty of resources and curriculums out there these days that it's easy to find something that works well for your child when you have the time to do so like we do. I know plenty families have 2 working parents and that would make this extremely difficult.

(And while certainly the adult-child ratio is lower in homeschooling, certainly not all parents watch their children at all times and know how to react to every situation!)

No, of course not, but I think more often then not, when there is a feud between 2 kids, and the parents are open and both acknowledge their kids emotional strengths and weaknesses, they can sort things out better. No continual years of abuse from one or many kids to another, no calling the police, no fines, no expulsions.

There are plenty of times where we tell the kids they need to handle it themselves and if they can't work with certain kids, don't play with them. In fact while the families and the kids are really close, there are a few kids who simply don't get a long so they don't play together because of their clashing personalities.