A 15-year-old girl is facing an assault charge, after a stabbing at a London high school.
The incident happened just before lunch on Monday, when a 19-year-old girl was sent to hospital with injuries that police now describe as serious but not life threatening.
The school was under a brief hold and secure while police investigated.
On Tuesday, London police said a 15-year-old girl is charged with assault with a weapon.
She is not being publicly identified due to her age.