I graduated from high school this summer (protracted slightly by my concurrent enrollment at a local community college). At least at my high school, a touch-typing course was required. And having been through it, I can say that nobody should be required to take a course where multiple equal possibilities exist.
For me, I learned to touch-type on Qwerty as a child, but I switched to Dvorak when I was about 12. After 4 years of typing exclusively on dvorak keyboards (and typing more in those 4 years than I probably ever typed any time before that), my fingers had significant muscle memory. Today, I can barely touch a Qwerty keyboard. Dvorak was an alternative, and I chose that alternative -- and it works equally well to Qwerty (so, unlike mathematics, where only correct methods give correct answers, touch-typing would have to be less than universally applicable: everybody would learn Qwerty, most likely, even if everybody doesn't use qwerty)
I had to take a typing test and get 30wpm to graduate. I implored them that I could type at about 60wpm on a dvorak keyboard, and in 5 mouse clicks I could switch the keyboard over (and wouldn't even need a different physical keyboard) and pass the test on the first try, without having to take the course. They refused this of me, and while I practiced for a couple of weeks on Qwerty to pass the test, it took me several months to undo the damage to my muscle memory, so that I could type at 60wpm again without wondering whether the comma was at the top-left or bottom-right of the keyboard. To me, at least, this mandatory typing test was a severe impediment to my studies.
I don't pretend I'm not in a minority -- Dvorak is used by probably less than 5% of typists in America. But what if you grew up in Germany, and used a German keyboard? When you came to America in your mid-teens to attend high school, you would be in almost the same situation (and I'm sure a great majority of Germans who type use a German keyboard, not a Qwerty keyboard).
So, although it's certainly amusing to think of layout wars in the near future, it's probably going to be the reality for some students. A reality that doesn't make any sense anyway -- keyboards are something you learn by doing, and these days there are a growing number of other input devices to deal with (voice recognition is available, cell phones, the frogpad, etc.) -- learning to touch-type may not even be useful to someone who plans to use voice recognition for the rest of their career.
This is just a simple matter of accommodating students with differing needs. A mandatory touch-typing class where the student could choose any keyboard layout they desired (or, better yet, choose any input *device* they desired) would be just fine. A mandatory touch-typing class where the student is locked into a technology that is possibly difficult or alien to them, and one which they possibly will never use again (even if it is in a small minority of cases) is just not acceptable. This isn't math; this is touch-typing. Muscle memory for the students who learned a different keyboard first means that trying to teach them a new keyboard layout will, in fact, harm their productivity, not help it.
Just my $0.02 :)