Girls perform better academically in almost all countries (2015)

I'll demonstrate:

Whenever statistics show an imbalance that benefits men, say in earnings, prestigious jobs, or positions of leadership, then the modern worldview dictates that this must be a result of a nefarious bias on the part of society or men as a group, aka "the patriarchy".

On the other hand, whenever the statistics show an imbalance that benefits women, such as sentencing/incarceration rates, suicide rates, or academic performance, it seems that often people are satisfied with an explanation that says the disparity is due to some innate behavioral difference in men. Occasionally, in the case of poor academics or crime rates among men you'll hear justifications along the lines of "men do worse here because of patriarchal social norms that ultimately end up hurting them", which in my opinion is a statement that subtly implies that these men's misfortune is their own fault.

Also in some cases you see outright deflection; bring up how women generally make better grades than men, and how they outnumber men by nontrivial amounts at universities? The response it "well, better education doesn't necessarily translate into better employment for women". Bring up the substantially higher male suicide rate? You'll often hear "well actually women attempt suicide more often, but use less effective methods" - and that's supposed to be the end of the conversation, as though attempting suicide with a bottle of pills (where you could still wake up in the hospital surrounded by family and friends) has the same sort of finality as shooting yourself in the head or jumping in front of a train.

As other comments have pointed out, the reason can easily be explained by a paradigm shift. One which shifts from a cooperation-favored environment, to a competition-favored environment. Though there is an absence of evidence, the absence of evidence doesn't prove the opposite, it merely puts into question the hypothesis.

> Also the grandparent claimed that females made rules that benefitted the same gender. In other words in a school setting a same sex relationship between teacher and student is such that the student benefits. However this clearly isn't the case per my college performance citation.

The GP stated this goes for women. Clearly, that doesn't claim the same goes for men. In fact, this is entirely in-line with the "women are wonderful" phenomenon, though I would personally believe other factors are at play beyond this.

We have known what the problem is and what the solution is for a long time. - Standard curriculum for non-standard children, and finding out what makes a child special and encouraging that at the expense of other things.

They crave (and physically need) hours every day spent running and climbing and swinging and rolling around, chasing each-other, etc.

Furthermore, many of them are quite self-directed and stubborn. They get some idea in their head about something to try, and then want to carry the plan through and can get extremely frustrated if thwarted (whether by the plan's intrinsic problems, or by interference from other people). Sometimes the plans are problematic (e.g. «I wonder if I can get adult attention if I take every toy my younger sibling wants to play with, until they start sobbing»), but often the goals/plans are perfectly innocuous, but adults step in and block action for poor reasons or no reason at all, or because the adult wants the kid to be focusing on something different. After being thwarted at a few different projects in a row, kids can become very agitated and defiant, or even melt down completely.

Once the kid has accomplished their immediate goal or given up on it, they sometimes instantly switch to some completely different idea, and don't want to switch back.

It is incredibly difficult to convince a big group of young kids (and especially boys it seems, though many girls are also very active) to sit still and focus on some specific close work without conflicts, especially when they have pent up energy. Trying to force them ends up creating a confrontation, and plenty of kids are looking around for ways to push boundaries and get attention. This is entirely normal age-appropriate behavior, and should not be pathologized. Letting the kids choose their own activities and decide when to switch from one to another goes a long way toward avoiding unnecessary bad feelings.

On the whole I've been fortunate in life, but it's not an exaggeration to say my life would be dramatically different if I'd learned what was going on as a kid. Instead it was interpreted as a character flaw: that I just wasn't applying myself. Even though I know that's wrong now intellectually, emotionally I still had that message beat into me for years as a kid, and that doesn't just go away sadly. I'd be particularly vigilant about teachers creating that dynamic, as sometimes they do it with good intentions but fail to understand doubling down on a "tough love" approach will utterly backfire here.