School teachers can and will bully students,
school teachers can and will let the bullying continue and also will schoolteachers tell them to bully another
adults can be children, they will bully another
At least on one Komvux(School for adults that need to regain a couple or more subjects( if they don't have it or if they failed previously) in Gothenburg there contains more children then adults, and at least one teacher there agrees and lets other "children" bully adults.