The incident happened at Dixons Kings Academy in Bradford.
The Nigerian, Vincent Uzomah, a married father-of-two, remains in hospital after being knifed in the stomach in an alleged row over a mobile phone before a science class at around 9am, both The Mail Online and The Mirror reported.
The 50-year-old Nigerian national had only joined the school four weeks before being stabbed by the youngster with what police believe was a kitchen knife.
The teenager was taken into custody in Bradford City Centre after a large manhunt following the incident.
The teenager had earlier fled the school within seconds of the attack as emergency services brought Mr Uzomah to hospital where he remains in a stable condition.
Teachers later appealed for the boy to hand himself in and claimed he had brought a knife with him to school.
The Crown Prosecution Service (CPS) said the boy will be charged with attempted murder.