lmao i go to a select entry/top tier school
nearly everyone tells other people about their marks, at least my group of friends, we brag to each other when we do well, and support other people when they do poorly, its all just words though, we dont bag anyone excessively if they do shit but if we both get excellents(85+) then we trash talk whoever got lower then us just for fun, we dont get protective of marks, or even really care about them amongst peers(when it comes to parents its a diff story)
even people outside of our group tell people about their scores, what they got wrong, etc, and people who usually get badish marks, jump up and down and brag about 90%+, everyone just lets them, good for them they did well, our schools stats will improve as a result
noone really gets offended or brags to the point of a nuisance, maybe its just my school though
the only people who DONT tell their scores are the quiet super nerds who just say
"oh i did bad"
"how bad"
"i failed"
"oh that sucks man, dw ******* got way lower than you and hes jumping up and down with happiness"
"mate i only got 98%, fuu i was expecting 100 *punches locker* du ma"
true story