Quite, Mollie, same aspirations here. Looks like it's working so far - while a lot of kids in his class have reached the stage where they will only play with others of the same gender, ds has friends of both sexes.
No-one's stopping those boys reading, are they? Looked like in one case, at least, the parents weren't helping. Footage of them at home playing on the X-box with the parents making excuses about how computer games are more exciting and you can't expect children to pick up a book.
Of course teachers should encourage all children, whether they are high achievers, chugging along happily or struggling. There is a problem when teachers just shrug their shoulders about any child who is struggling and blame it on them belonging to a category, whether that category is race or gender or class or disability or whatever.
Back in the olden days when I was at school I saw teachers like that - acting on class grounds and on gender (but discriminating against girls). It is not on, however jaundiced they are.
My BIL teaches performing arts at a secondary school. Says some of the badly behaved and low achieving children do well in his classes because the subject grabs their interest. So they end up being prepared to work on literature that they would reject in an English class.
Dunno how you transfer that to other subjects, or to primary, though.