A pair of students learned that the school of hard knocks isn’t all it’s cracked up to be after a dispute landed one in jail on Monday.

Ignoring their teacher’s orders to stop, two lovelorn teens escalated a shouting match into a battle royale in a Phnom Penh high school.

When the cops arrived, five escaped leaving one behind. The boy was hauled in for questioning and police are looking for the others. DEUM AMPIL