"For a church or for parents to have no regard for the fact that their children are receiving a godless education is a mark of apostasy." - R.J. Rushdoony. 

"Obviously the schools are not Christian. Just as obviously they are not neutral. The scriptures say that the fear of the Lord is the chief part of knowledge; but the schools, by omitting all reference to God, give the pupils the notion that knowledge can be had apart from God. They teach in effect that God has no control of history, that there is no plan of events that God is working out, that God does not foreordain whatsoever comes to pass... the public schools are not, never were, can never be, neutral. Neutrality is impossible. Let one ask what neutrality can possibly mean when God is involved. How does God judge the school system which says to him, 'O God, we neither deny nor assert thy existence; and O God, we neither obey nor disobey thy commands; we are strictly neutral... The big lie of the public schools is that the God of the Bible is irrelevant. The textbooks never mention Him. Everyone assumes that children do not need to know anything about God, God's law, and God's Word in order to become educated people. This is Satan's own lie.'" - Thoburn. 

"The excuses for taking the short term "easy" road of public education are legion among Christians. They range from 'I can offset the public school's influence by teaching my children at home between lunch and after school' (which only admits of guilt, while at the same time begging the question), to the always present 'I don't have the time' or 'I can't afford it' (though large mortgages, new cars, televisions, etc., are easily affordable). Eternity will witness the damage that such a selfish and ungodly agenda produces."- Dr. Reg Barrow, all citation above from  the article  entitled "Godless Public Education and Sin" by Dr. Reg Barrow, available for free download at http://www.swrb.com/newslett/actualNLs/CRTPublicEd.htm.