"The act was planned and took place in the chief prefect's dorm room, not the side of a drain or a sidewalk," he said.

He continued, "The warden's roster was well organised, but it is useless if the duty is not carried out. It is better to resign and become a regular teacher.

"For the sixth (the senior assistant) and seventh defendant (the principal), they were also seen as negligent in carrying out their responsibilities, especially in ensuring the welfare and safety of school students."