Back when I was in high screwl (and we turned in our homework chiseled into REAL STONE tablets), there were certain hard classes, like Latin, where they’d add a point to the normal point value associated with your letter grade, so 3.0 for a C, 4.0 for a B and so on. So if you got an A, that class would go in as a 5, so if you had straight As otherwise, you could theoretically end up with a GPA > 4.0. The bonus classes were few enough and hard enough that I don’t recall anyone ever doing so, though.
I am sure that if I had purchased billboard space for this purpose for any of my kids they would have stopped speaking to me.
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