A teenaged student was rushed to hospital after he was allegedly stabbed by a fellow student while at school.
Emergency services were called to Staughton College secondary school on Wilson Road, Melton South in Melbourne's north west after 3pm on March 26.
Police said a 16-year-old boy was taken to hospital with non-life-threatening stab wound injuries.
A 17-year-old boy was arrested on the afternoon of March 26 after he self-presented at a police station.
He was charged with affray.
Another male teenager allegedly fled the school on foot after the stabbing, police were told.
A second 17-year-old boy attended a police station on the evening of March 27.
He was charged with intentionally causing injury, affray, assault with a weapon and possessing a controlled weapon.
"The circumstances surrounding the incident are yet to be established and investigations remain ongoing," police said.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or to submit a confidential report online at www.crimestoppersvic.com.au.