[CMAC51]

That's wrong. There is a separate clause in the Constitution specifically empowering Congress to establish a system of weights and measures. It was therefore not intended to be comprehended under the commerce clause. And, there is absolutely no comparison between setting a legal standard for weight, and requiring schools to perform in a certain manner. Likewise, no one can legitimately claim that education is "commerce". See United States vs. Lopez

Article IV, Section 1.

Full faith and credit shall be given in each state to the public acts, records and judicial proceedings of every other state. and the Congress may by general Laws prescribe the manner in which such acts, records and proceedings shall be proved and the effect thereof.

The granting of a high school diploma is a state act. Congress does have constitutional authority to set minimum standard which that act must meet to be recognized by other states.

[inquest]

Congress does have constitutional authority to set minimum standard which that act must meet to be recognized by other states.

So you're saying that if a school doesn't meet some particular preconceived standard, Congress can prohibit states from recognizing its diplomas? That's not what that article states. The purpose of the article is to prevent states from disregarding the acts of other states, not to empower Congress to force states to disregard those acts.

[skip2myloo]

Gee CMAC, I don't know - that seems like a real stretch to me.