IDK. i known this sounds a little immature but it is SO annoying when teachers need help to carry their stuff out to their car or bring a box down from the office and they only pick boys. im an average sized girl but i could litterally squish some of the guys in my grade that they pick! lol.
What sort of responsibilities? If you are talking chores in family life, then it's because boys are seen as more 'masculine' and will do things like mowing the lawns and taking out the trash. Whereas girls are more feminine and homely so they wash dishes and vacuum.
How are school responsibilities different for boys and girls?
like school and families?