Girls mature faster, and learn differently. Frankly, a lot of boys simply cannot sit still in a classroom and listen to a boring lecture. They're going to be

Girls mature faster, and learn differently. Frankly, a lot of boys simply cannot sit still in a classroom and listen to a boring lecture. They're going to be inattentive and they're going to have more behavioral issues. The solution is more hands on learning, and more physical activity. Gym class isn't even available to many kids anymore. Pretty much everyone should be getting an hour of physical activity a day and you could split that up into two 30 minute periods and have boys that are far more ready to actually pay attention in class. I'm speaking from my own experience with ADHD but I think it would generally help everyone.