This is exactly what is necessary. I was continually watching over what was being dished out to my son in public school until I finally convinced my husband that it would just be easier to home school.
Right....... and in our case, we found out that we liked what was going on. Not that we agreed with everything, of course, but the problems were small enough to deal with at home in our many conversations with our kids.
I am very aware that our situation is not typical, but in our case, the best thing for the kids was to leave them in public school to be a witness of the love of Christ to a whole lot of kids who desperately needed it.....
And they ALL agree that it was the best thing for them.