Why exactly? I provided PROOF to correct your statement regarding the permission of promoting Christian values, virtue and morality.
What in the Wide-Wide-World-of-Sports does either the N.W. Ordinance or--for that matter, the Congress or a speech by President Washington circa 1786 have to do with the question?
Here was your statement to refresh your memory:
"This sort of prostelization has never been permitted in my knowledge."
My two examples are evidence that in-fact the type of proselytizing you suggest was never permitted - was INDEED permitted, and even ENCOURAGED by our Founders. In-fact, when you read our true history - you find that it was EXPECTED.
If you want an answer to this question you posed: What then would be the response of all those sanctimonious posters who would object to something they believe is not appropriate for a class like the one mentioned here? here is your answer:
Your question supposes that any promotion of Christian values/virtues and principles is on an equal footing with debased and wicked or secular/humanistic/unGodly morals and virtues. Such an idea is and was considered absurd by our Forebears. To prohibit any promotion of Christian/Biblical ideals and morality in order to prohibit any possibility of perverted values being also promoted is to insist we remove the entire foundation upon which we were established.
In-short, having NO promotion of biblical values or virtues INVITES the establishment of secular-Humanistic values that now plague our culture. All you have to do is look at our public school's to see the fruit of what happens when you prohibit any promotion of biblical values in the classroom, or the nation for that matter.
It proves we in America are no longer of one mind and one people with a common set of goals and expectations in our citizen-conduct because our Founders built and established our Foundation upon the understanding it would only last as long as We The People were of a moral and Religious mindset.
If that's your best shot, well, it's a case of dueling with an unarmed man.
Amazing that even among Conservatives, our true history is a moot weapon to even be considered. It's how most end up being conquered in such arrogance. Truth my friend is a weapon, as sharp as any sword. If we cannot wield it, or refuse to - then everything we were built upon as a Republic is lost.