They must also be prepared spiritually. There are many ways this can be done. One family takes time before school to have Bible reading. While Dad and the kids eat, Mom reads a chapter as they work through the whole Bible. Mom the other.
Some parents use the night before to share scriptural truths.
God's Word is important. Before anyone else has a chance to educate our children, we need to teach them about God. If children are to find their way to God, someone must point the way.