Starting school a year later is a huge advantage, since you're physically, emotionally and mentally more mature than your peers. One year at those developmental

Starting school a year later is a huge advantage, since you're physically, emotionally and mentally more mature than your peers. One year at those developmental ages leads to a noticeably stronger and smarter person. Relative to girls, a boy could be much much less mature physically and mentally at the same age, equivalent to multiple years. But the advantage is only because of relative maturity. If we give everyone this "advantage" the the students will just fall further and further behind as their education gets delayed. In countries with high test scores, students start education earlier and it's more rigorous earlier. At best, maybe the solution is girls should start school earlier, or maybe we need something more dynamic that looks more individually at each student's development (obviously this has been tried before, but never successfully as far as I know). Either way, I just don't think the conclusion here follows the facts.