i am not defending how schools handle bullies at all, but saying no one cares is inaccurate. people care but

kids and teens are naturally born liars or just can't describe events probably and in their mind they are always innocent, most schools are understaffed and most teachers overworked and can't keep track of what everyone is doing, and most importantly parents. a bully probably has bad parents and bad parents are the ones that are willing to get into shouting matches and lawsuits because you treated their little angle too bad. that's why it's always "your son got into a fight" and not "your daughter is bullying her classmates". that's why it's always wishy washy "don't fight kids" to both sides. the moment a parent feels like their kid is taking the blame they are going to pound on you until either they are forced out of school or you give in.

it's sad honestly but mix that with 10 or 20 years of constantly dealing with kids and parents bullshit, and you get seemingly apathetic teachers.