Home schooling is what you make of it, like most things in life. I home schooled my kids, off and on. It was a very nice experience, but also very demanding of your time. It depends a lot on each child and how motivated they are too. I found it best to follow a curriculum from a reputable home schooling program.
My kids have all gone on to be college educated, so it didn't hinder their potential in that way. I guess I have mixed feelings about it. I cherish all the close time I spent with them, but I also think children need the social aspect of school in their lives.
I did see some witnesses who did not take the time to really teach their children and some can barely read to this day. That is abusive, in my opinion. If the parents are not educated enough to handle the lessons, I feel they should not do it. Most parents want their children to have a better education than them.
That witnesses are taught that education is not important, except to preach.