Huh. That sort of attraction isn't such an uncommon thing, believe it or not... but do try to recognize the difference between infatuation and love. I don't know if she's your high-school teacher or not, but if she is, I'd advise you to let go of that infatuation and move on to other fish.
I'm going to go out on a limb, and assume that what you're seeing in her is that she's more mature than your peers, maybe more intelligent, etc. but when dating, an age gap is a huge consideration to take into account. With age comes experience, and with that comes maturity. I thought I knew what maturity was at 14... but I knew that the younger me was short-sighted by the time I was 16. After I graduated, I thought I had it all figured out, but it was only after years out on my own in my 20s that I had a series of painstaking epiphanies, and realized how many more things I had to learn about the world, about other people, and mostly about myself.
On the other hand, I recently (~2 hours ago) learned that the assistant band director from my High School just married a former student (and the Home-Coming Queen) from my older sister's graduating class... it's mitigated a bit by the fact that they're only 2 years apart, but there's still a bit of stigma there... like dating your employer. Still, things appear to have worked out for them; after leaving school, earning a degree, and learning about the world at large, she came back to him, and apparently they hit it off quite well.
We all make our own choices, and live with those consequences. I'd advise you to take a few steps back, learn a bit about the world, and then come back later on... if your feelings are unchanged, then maybe there's something to it. Odds are, though, that it's just a passing infatuation, and you'll someday find peers who are every bit as mature and engaging as you might hope.