The two boys, dressed in baju Melayu school uniform, face-offed in a classroom while their male and female classmates looked on.
The bully threw punches, kicks, slaps, hurled chairs, and even held the victim at a choke-hold.
The victim was hit until he fell to the ground, but when he tried to get up, the bully choked and slapped his face.
The bully and victim were enclosed in a makeshift ring with tables and chairs, while their classmates spurred them on.
The victim did not attempt to fight back against his bully.
Some classmates sat on chairs to watch the fight, some laughed, while others took videos on their phones.
A few girls could also be heard giggling and making exclamations in the background.
Nobody stopped the violent assault, but someone could be heard saying, "Sudahlah" (finish), however, the bully kept throwing punches.
The video that was shared on a Facebook page received close to 90,000 views, 6,000 shares, and 850 reactions since it was uploaded 11 hours ago.