Let's say one adult could educate 30 kids. That's "efficient" compared to one adult educating one or two or three kids. Okay?
But it doesn't mean everything in all cases. If one parent is going to be home all the time, then fine. If he or she is capable of being as effective a teacher, fine again.
The such a measure of efficiency wouldn't be useful, and the efficiency you talk about (hours the child spends learning, etc) is a more appropriate indicator.
Hey, I wasn't kicking homeschooling. It is right for some people. I just don't think it is right for everyone. Not every parent is a "bad person" if they have interests outside of doing their own children's schooling. But for those who want to, fine.
Just kidding, I think I know what you're trying to say. But if a teacher could take take 30 kids and teach them all they need to know, and not need to bring home work to finish, I would consider that one very efficient teacher! Heck, I wouldn't even begrudge them the 8 hours (although I would still think 8 hours for a young child is too long and inhumane.)
But since this is apparently a rare thing for a teacher to be able to do, (and I'm not faulting the teacher in all cases), I still think that for those who seek the most efficient way to teach their child, homeschooling is the only way to go.
Oh, and I just gotta say! This is another fabulous thing about homeschooling! I never miss anything that I want to do! I never have to "pick up the kids" or be home at a certain time. If I want to do something, I do it and the kids come with. Sometimes I might leave them with my mom, but in most cases I take my mom with me too!