It seems to be very hard to distinguish between bullying and rough play. Rough play is a developmental requirement (particularly for young boys) across the hominoid clade (and likely wider). Being denied it also has real and lifelong consequences. For further reading, Frans de Waal has done a lot of work in this area.
Educational policy informed by this research usually looks not to intervene in physical conflict between equally matched (by size/age) peers. It also looks at conflict management and resolution as a primary responsibility of the peer group, rather than the adults/teachers, with the escalation path being to older peers before adults.
Educational policy informed by this research usually looks not to intervene in physical conflict between equally matched (by size/age) peers. It also looks at conflict management and resolution as a primary responsibility of the peer group, rather than the adults/teachers, with the escalation path being to older peers before adults.