(This is also taken from the article COVENANT AND HOME SCHOOLING by Mr. Slabbert Le Cornu of South Africa, which is available at http://www.spindleworks.com/library/slabbert/ezera_nov.htm)
Deuteronomy 6:7,8 points to the fact that all our thinking ("between our eyes") and all [we] do (hands), must be in service of God. Therefore, the Word of the Lord cannot be restricted to family and Church life only; for, as Scripture teaches: " ... on the way, when you lie down, when you rise up, etc." - in all you do - you must be led by the law of God. This is one of the advantages of home schooling, that the child experiences education and upbringing as a way of life and not as something that is done only on certain hours of the day, at school, or in Church, catechism classes, or society life.
At home they learn diligently, have work to do, they can play, everything according to the law of the Lord. Therefore, home schooling must not take place in isolation, for in Deut. 6:9, parents are also shown the extension of covenant upbringing: "And thou shalt write them upon the posts of thy house, and on thy gates". Thus, [not only] private life (the home) but also society (thy gates) must be brought under the dominion of Christ by Reformed instruction.
Covenant instruction begins in the home, but does not end there, for it flows over into a life in the covenant in both Church and all the broad areas of society. In the covenantal home the children are taught the first principles of how to seek God's will and honour. Totius, the foundational church and Afrikaner leader in the first half of the twentieth century in South Africa wrote, and rightly so,
History proves when the family is sound, both Church and State flourish. The family is the foundation of human society. Give as thus Reformed families and the Church will prosper. Otherwise we certainly will face a dark future.
May this be a prophecy for and not against the Reformed Church in South Africa!