In many cases students are never exposed to competing ideas within their families, churches, or Christian schools, and as a result they go out into the world unprepared for the intellectual battles they are about to encounter, especially on secular college campuses.
Schools ought to teach students to challenge secular ideologies masquerading as science in the classroom.
In high school, I came to realize I had a second-hand faith, derived from my parents and family background. I had no actual reasons for believing it.
No matter how much you like your local school teacher, he or she is a government agent.