The family of the class 12 student has alleged harassment by his school teacher.
The victim was said to be upset after being allegedly abused by the teacher, over his poor academic performance and not trimming his hair, they said adding the boy hanged himself in his house near Karumathampatti last night, police said.
A case under IPC section 306 (abetting suicide) was registered against the teacher and further investigations are on, they said, adding that education department officials are probing into the incident.