One thing I hate about bragging about that sort of thing is that it's (unfortunately) more of a reflection on the quality of the high school you attended than it is on your character. The best students at the worst high schools in the US don't have the same access to AP courses as the average student at the best high schools.
With that having been said, what do suggest we can do to help out with districts with less resources? I've done a lot of outreach, but it often feels like a drop in the bucket....
A number of my friends did this though, so I don't think it's quite as big of an accomplishment in the US than elsewhere. Though I'll be the first to admit that my group of friends tended to be the high achievers in high school/university.
-- A undergraduate in CS/Mathematics
But, we take students from some magnet schools here to intern and they're amazing (multivariate calc, AP physics, and a year of Java--before senior year. The student had worked on a team project and was commenting his code unprompted...). I invited a Canadian colleague to a group meeting where they presented what they were working on she was stunned...I think that in the US when students have opportunities, it's great--the difficulty is how to improve the average....