I can't find it now, but I seem to remember a study that showed that boys dominated both ends of the "bell curve" when it came to academic achievement: the top

I can't find it now, but I seem to remember a study that showed that boys dominated both ends of the "bell curve" when it came to academic achievement: the top achievers were boys, but the lowest performers were, too. The author here doesn't seem to be particularly interested in averages, which would make for a fairer comparison.