Check out this article. It seems that West Virginia officials are adding DDR to the physical education program to help combat youth obesity. Setups will be purchased for each of the 700+ public schools and made available to students.
Unfortunately, they will be using the XBox version, instead of the PS2. It also makes me wonder what kind of "rugged dance pad" they're using. At the quoted price, they'd be hard pressed to get Cobalt Fluxes...