I met my girlfriend in High School, though I didn't ask her out until a little while after we'd graduated. I guess that sort of counts for what you're asking though.
The chance of finding such a person in high school is low, but not astronomically so by any stretch of the imagination. Let's use a nice cliche figure like one in a million. My school wasn't particularly large, so my odds were slightly worse, but I'd say most people can expect to have around 1000 members of the opposite sex within a few years of their age at their school. If we handwave the ability to woo the ideal choice from that group, then we've reduced the odds to 10^3/10^6 or 1/1000. However, going to the same high school implies some similarity in upbringing, cultural outlook, etc, and this is likely enough to increase these odds by a factor of around 2-4. As such the odds are somewhere between 1/500 and 1/250, meaning that on average, within each grade level or two, a high school should average one romantic pair meeting the qualifications for 'love.'
Of course, the odds are better in college then high school, as one is put in contact with a larger population (also greater age differences will gradually become more acceptable) and the "stuff in common" factor should be enhanced by the common choice of university.
The chance of finding such a person in high school is low, but not astronomically so by any stretch of the imagination. Let's use a nice cliche figure like one in a million. My school wasn't particularly large, so my odds were slightly worse, but I'd say most people can expect to have around 1000 members of the opposite sex within a few years of their age at their school. If we handwave the ability to woo the ideal choice from that group, then we've reduced the odds to 10^3/10^6 or 1/1000. However, going to the same high school implies some similarity in upbringing, cultural outlook, etc, and this is likely enough to increase these odds by a factor of around 2-4. As such the odds are somewhere between 1/500 and 1/250, meaning that on average, within each grade level or two, a high school should average one romantic pair meeting the qualifications for 'love.'
Of course, the odds are better in college then high school, as one is put in contact with a larger population (also greater age differences will gradually become more acceptable) and the "stuff in common" factor should be enhanced by the common choice of university.