Hello 2404;
I agree with the no Christian success guarantee. In my experience churches tend to shelter their children by keeping them busy with homeschooling, children's and youth ministry activities and not exposing them enough to the world. I have been guilty of that myself.
By the time many of these children become adults they leave the church and some have never gone back.
This doesn't mean this is the case with all Christian families because many have gone on to establish their foundation of Christ in their family, work and ministry.
I admire parents who get certified and teach homeschooling to their children but doesn't this keep them from developing people skills and interact with others?
Lanolin, right now Christian schools have a shortage of school teachers because of a primary reason, low pay, benefits and constant budget challenges within the school. We do need teachers in Christian school because the students learn to interact with others.