" [W]e may infer that it is also not possible to gather pink grapefruit from your juniper bushes, or pine nuts from your tomato plants, or lemons trom youur box hedge. Pursuing the analogy relentlessly, we may also surmise that you cannot send your child to a culinary school and expect to get back a mechanical engineer. You cannot send them to art school, and wonder why your son never became a doctor like you wanted. You can't pay for law school, and then be surprised when an attorney eventually shows up. We often act astonished when we have no right whatsoever to be surprised in any way. We say, wide-eyed with Aaron, that all we did was put in a bunch of gold, and "out came this calf" (Exod. 32:24). That has to rank as one of the lamest excuses in the Bible, and here we are, still using it. All we did was put in hundreds of billions of dollars, and out came this misbegotten culture. How could this have happened? We are frankly at a loss.
And lest I be accused of being too oblique in the point I am seeking to make, you cannot send all the Christian kids off to be educated in a school system that is riddled with rank unbelief, shot through with relativism, and diseased with perverse sexual fantasies, and then wonder at the results you get. "

― Douglas Wilson , Gashmu Saith It: How to Build Christian Communities that Save the World