In a frightening video, a Whyalla schoolgirl is assaulted by another pupil

During her school lunch break, a 16-year-old girl was bashed by a fellow student, resulting in a concussion and facial injuries.

On Monday, the Year 11 girl was approached from behind while seated with friends at Whyalla Secondary College in outback South Australia.

Another female student suddenly grabbed her hair and brought her to the ground.