Giving an update on the rollout of the exams on Sunday, Matome Chiloane said 45 pupils were caught with crib notes, while an "impostor" was discovered writing a matric paper on behalf of another student.
An investigation ordered by the Gauteng Education MEC revealed substantial evidence supporting allegations of emotional and homophobic abuse, by the deputy principal at Khehlekile Primary School towards Mbatha, contributing to his decision to end his life.
Grade 9 pupil Brian Ndlovu mysteriously died last week shortly after returning from school, prompting allegations from his family that he was force-fed rat poison by some students.