Police say they are working closely with the school following the incident on Monday 10th December.
Officers were called into St Michael's C of E in Heavitree on Monday.
The knife was not taken out of the child's bag until it was confiscated by staff at just after 9am.
Young teenager stabbed in Plymouth
Plymouth will not delay local elections
'Quarry dust' sparks worries in Kingsteignton
2025 set to smash UK heat records
Man interviewed by council officials amid flag war
Lifeboat washes up at Sidmouth
