Police say an eight-year-old boy and a woman were injured on the grounds of a Berwick primary school on Thursday morning.

Police say an eight-year-old boy and a woman were injured on the grounds of a Berwick primary school on Thursday morning.

Police say an eight-year-old boy and a woman were injured on the grounds of a Berwick primary school on Thursday morning.

Police say an 11-year-old boy and a woman were injured on the grounds of a Berwick primary school on Thursday morning.

Police say an 11-year-old boy and a woman were injured on the grounds of a Berwick primary school on Thursday morning.

Police say an 11-year-old boy and a woman were injured on the grounds of a Berwick primary school on Thursday morning.

Police say an 11-year-old boy and a woman were injured on the grounds of a Berwick primary school on Thursday morning.

Police are speaking to an 11-year-old boy who allegedly stabbed an eight-year-old boy and a staff member on school grounds.

Police are speaking to an 11-year-old boy who allegedly stabbed an eight-year-old boy and a staff member on school grounds.

An 11-year-old boy who stabbed a younger student at a Melbourne primary school will not be charged by police.