I also agree that spin training should be taught. Having practiced spins in an Extra 300 and a C-152, I would encourage spin training in a fully aerobatic aircraft as well as a more conventional aircraft.
I found that doing so offers a new perspective on spins. Spinning a 152 or 172 teaches students proper procedures...in other words, they walk away from the experience with the procedural knowledge to right the aircraft and recover properly.
This technical knowledge, however, should be supplemented with an intimate exposure to extreme unusual attitudes. This exposure is all but impossible in typical light planes...most are inherently stable, and as such, little actual time is spent in the unusual attitude. Indeed, the time spent in it is more often than not spent attempting to MAINTAIN it, rather than recover from it.
If one successfully combines technical spin knowledge and training with intimate familiarity (visual and physiological) with unusual attitudes, I dare say he or she will be a much safer pilot. After all...I'd be willing to bet that many stall/spin accidents could be avoided if the element of surprise/panic could be diminished or eliminated.
-WN