"He heated up the metal sharpener by vigorously rubbing it on the floor and when it became heated, he placed it on three different spots on my son's cheek. This caused blisters to the extent of the skin peeling off.
This is a companion discussion topic for the original entry at http://education.malaysia-students.com/2017/07/primary-school-student-physically-abused-teacher.html?m=0