I was the top performaner in math for my year (although I tended to take classes with older students) but if any guy managed to get near my score he was a natural genius, while I just must have worked very hard. The same guys would constantly tell me that they were "naturally" better and when, as I previously mentioned, teachers would cite these kind of statistics, they felt vindicated and in discussions would say I was just an anomaly or that I compensated by studying more, as girls do. And the few times I slipped (like coming in second instead of first) it was: "Well, you know guys are better anyways..."
Fun times, highschool. I don't hear it at the university level except for like one or two questionable rants by teachers. And our math/stat department has a good ratio of female students.