While photoreading as a core ability is a relatively benign teaching tool, I beleive many parents would be quite against some of the "baggage" that is associated photoreading (whether or not it would be introduced WITH PR) such as channeling mind energy, Qi and SFQ.
For those who remember when prayer was still in public schools, you probably know by now that the parents of schoolchildren aren't very happy when teachers begin introducing elements of learning tinged with "religion", be it pagan or Christian.
Personally, I'm taking the PR course as is with a couple of the tapes because that is as far as I wish to go. (And there is a LONG way to go!)
I beleive the other "extra" elements, such as I mentioned before, probably work for some, but I don't think I will ever try them... actually, I probably never will. Figure THAT one out 
If it could somehow be proven that all the kids were being taught nothing but PR, then you MIGHT get the parents to agree, but other than that... well...
GreyWyvern