Women tend to do better than males in a school setting. It was that way when I went to school back in the 1970s. The girls in my class were on the whole better behaved, more diligent with completing their homework, and more serious about their academic performance in general.
Of course you had your exceptions. There were some girl troublemakers and there were some boys who stayed out of trouble and studied hard and diligently.
So on the whole, I'm not surprised at all to see that girls tend to outperform the boys academically.
But the men used to have better “Street Smarts” than the women.
Today? Who knows.