First, the government: by saying that libertarianism disregards Christianity in respect to our government, you're repeating the assertion that libertarianism and Christianity are incompatible. They're not. I'm not sure what you have in mind by a government that doesn't disregard Christianity.
And schools: government schools should be privatized.
Libertarianism is indeed incompatible with Christianity. Why? Because Libertarinaism rejects the authority of the christian church and makes the individual conscience the sovereign judge of religious and moral truth. It also rejects moral absolutes and authority...especially religious authority. It emphasizes that men should be free to do whatever they want in moral matters, whereas in Christianity, all moral authority comes from God, and if that authority is not excersized in harmony with God's law, then it isn't legitimate. In other words:
Libertarianism= "my will be done"
Christianity= "Thy will be done"