The Sans Souci school governing body (SGB) has suspended the teacher and pupil at the centre of a violent altercation caught on camera.
The teacher and learner have been suspended pending a disciplinary hearing.
A widely shared video shows the teacher reprimanding the 16-year old before smacking her in the face in front of the classroom on Tuesday.
All staff and educators have also been offered counselling following the incident.
The girl's mother has opened a criminal complaint of assault against the educator, while the woman has also laid a complaint with police against the learner.
On Wednesday, a group of pupils at Sans Souci staged a protest during assembly and outside the school gates in support of the teacher.
The mother of a learner told media on Wednesday that she hopes her daughter won't now be victimised.
WATCH: Mother of San Souci pupil: "I'm disappointed"
This article first appeared on CapeTalk : Sans Souci suspends both teacher and schoolgirl over slap incident