If that were the only reason, it would certainly be enough of a reason for every parent to send his child to a Christian School. However, the Bible tells us two important facts: while God does not promise salvation for everyone that hear the gospel message promise salvation for everyone that hears the gospel message, He does day that faith comes by hearing the Word of God, and the Word of God is heard daily in a Christian school.
The Bible teaches us that God has a greater plan than one that focuses only on ourselves. A Christian education prepares a child to understand the Bible, know how to defend the faith and share the gospel and disciple others. The next generation must be considered as part of the responsibility of the present generation.
Matthew 28:19-20: Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.
Psalm 78:6-7: so the next generation would know them, even the children yet to be born, and they in turn would tell their children. Then they would put their trust in God and would not forget this deed but would keep his commands.