Which version, the Jewish, the Catholic or the Protestant? Just via how you wish to enumerate the ten Commandments is making a choice as to one particular religious tradition over others.
For myself I suspect that if anyone would know the proper enumeration it would be the Jewish people; but much like the sabbath- theology finds itself changed for political reasons.
Yeah, early America was very confused about which bible they were using to teach with, especially whether they were using a Christian bible or should be teaching Judaism.
If the desire is to teach it as literature, I'd think the King James Version, because of the beautiful language.
Or the Christian Scientist or the Mormon or the Islamics?