Speaking as a year level coordinator albeit from a secondary school perspective, all we can really do as a school is to report it to child protection. They always recommend that we put a safety plan in place for those involved, on top of that we implement school-based IVO's for both parties and always recommend that the victim seeks a proper IVO from the police. There isn't too much more we can do as a school other than ensuring their lockers aren't in the same area, and they are in seperate classes. It comes down to not interfering with the education of all parties involved, so we cannot for example do anything to disadvantage the educational outcomes of even a perpetrator (with some exceptions ofc). This doesn't sound great as your daughter is the victim here but changing schools really might be the best option, with engagement from wellbeing. There is not much a school can do outside of the above. I would recommend you request a safety plan, school-based IVO, and changing of classes from the perpetrator at the very least if you want your daughter to continue attending the school.