I have to second this. For instance, everyone in education and policy circles these days is talking about Finnish education. Besides the fact that Finnish schools make sure every student eats enough and teachers have a lot of autonomy to shape lessons to student needs, students get something like 50 minutes of recess at lunch and less formal breaks every hour or so during the day. The school days are often shorter, too.

(How I envied my Finnish cousins when I saw that they got to take an hour or two of nature class every week and sometimes they went home at 1 pm and sometimes they went home at 2:30... depending on the class schedule, which repeated weekly but was different every day!)

The article's suggestions for instructional activities that benefit boys outline projects that also benefit girls. The reason boys are disciplined more than girls when both are bored half to death is that many boys hit each other and run around while many girls are "nice" and just write notes, doodle, or sleep, staying in their seats as required. I say this as a woman who brought a pillow to class in high school and was seen as a stellar student.