Yup, it can be purchased out of pocket. The same is true for any other medication. The question is whether this particular medication deserves to be covered by insurance just as any other medication. Is the ability to have sex an essential of life, or is it a mere "perk?" If it's a perk, then you're right, it's not any more or less important than a flat screen TV, and it's a tradeoff for the individual to make of one or the other. If it is more of an essential, then it seems it should be covered by insurance in general (be it public or private).
So far as teachers go, the relevant question here is whether this drug is covered by your typical, average private insurance. I see no reason they should have less coverage than someone in the private sector. And I actually don't know if Viagra is usually covered by private insurance. I only recall that it generally was not when it was originally released. It may well be that private insurance still usually does not cover it, in which case I agree with you that the teachers shouldn't have coverage for it.
- wolf