So if they go to public schools, there is no chance for them?
No, but the deck is stacked in favor the house, and the house (almost) always wins -- 85-95% of the time, anyhow. That's the percentage of evangelical kids who walk away from church as soon as they leave home.
OTOH, 95% of home-schooled kids either agree with, or, more frequently, strongly agree with, the faith of their parents.
Picture two doors.
Very little chance. Too many corrupting influences even if they are fortunate enough to get good teachers.