A female teacher suffered a broken jaw and a male teacher was attacked with a 950,000-volt stun gun, in an assault outside a Bristol school.
The woman was punched in the face when she went to help the male teacher as he was attacked with the stun gun and punched to the ground.
The attack took place outside Ashton Park school, Bower Ashton, as the teachers left during the lunch break.
A primary school pupil in Bristol has been suspended after threatening his headteacher with a knife. The headteacher was not injured in the incident, which happened at the Two Mile Junior School in the Kingswood area of the city on Thursday.
The nine year old is understood to have brandished the blade during a lesson.