The raising up of your children is your responsibility as a parent.
Proverbs 22:6 says, “Train up a child in the way he should go, and when he is old he will not depart from it.”
With that said, it doesn’t mean you can’t subcontract it out. Now, I can’t tell you how much you should or not. There are situations where subcontracting makes sense. For instance, if you suck at math it might make sense for you to find someone else to teach your kid math.
When it comes to spiritual development, I wouldn’t subcontract that out. Deuteronomy 11:19 says,
“Teach them to your children, talking about them when you sit at home and when you walk along the road, when you lie down and when you get up.”
God expects parents to be the primary influencers of their kids’ spiritual growth. This is not to say that there might not be others who play a supplementary spiritual development role in your kids’ lives.
Homeschooling is not for everyone. There are instances where public schools can be a better option than homeschooling. One such instance is my own. Yes, the public schools were indoctrinating me, but I would have been indoctrinated at home also. My parents would not have been able to develop my reading and writing skills for instance as well as the public schools. Either option, I would still have been under an atheist worldview.
The majority of homeschooled kids are homeschooled because the parents don’t trust the public schools for one reason or another. Needless to say, the anti-Bible indoctrination at both public and private schools can steer kids from God and you certainly don’t want that. I’m not saying that there can’t be kids who love God in these schools, but you’ll have to detox them every day from the worldly philosophies that will assault them. If you have the time and energy to do that, your kids may turn out OK. But if you don’t, you’ve basically handed your kids over to the demons to indoctrinate your kids.
It’s probably not a good idea to put your kids in public or private schools until they have at least a working critical thinking mind. I can’t give you a specific age that might be, but if you’ve raised your kids well that could be 14. I’ve seen 14 years old who think critically.
The most critically thinking kids I know all come from homeschools without exception. Even the Christian schools don’t produce the quality that homeschools do.
I have seen too many Christian parents entrust their kids to public or private schools who indoctrinate their kids into thinking there are 46 genders, that there’s no God, that sex before marriage is OK, etc. These kids pretty much become secularized. So be very careful about letting the Babylonians raise your kids.