A fifth youth has been accused of murdering a boy who was stabbed to death outside a south London school.
Zac Olumegbon, 15, was attacked at the gates of Park Campus School in West Norwood in July.
The 16-year-old boy, who cannot be named due to his age, is due to appear before Sutton Youth Court later.
Four other boys, one aged 15 and three 16, have appeared in court accused of murdering Zac and causing grievous bodily harm to his 14-year-old friend.
The 16-year-old will also be accused of causing grievous bodily harm to Zac's friend, when he appears in court.
The other four are due to stand trial at the Old Bailey on 7 March.