The macho element apart. When I was at school boys were caned for lack of effort, (me included). Girls on the other hand werent. This can be equated to ; Boys must succeed academically as they will one day hold positions of great power. Girls on the other hand may aspire to being the boys secretary. So consequently require less encouragement to excellence. Again utter rubbish !
That’s point I’ve often made. Girls were not considered worth educating. All we were fit for was keeping the home tidy and cooking our husbands’ dinners. If we just messed about at school it didn’t really matter. If I had gone to a sexist school, I doubt I’d have done very well at all. I might, just possibly, have made it to “senior shelf stacker”