A 15-YEAR-OLD student assaulted a teacher who tried to stop him from leaving the classroom without permission.

The juvenile, who cannot be named, pleaded guilty to punching, pushing and holding onto the neck of the 34-year-old teacher at a school in the eastern part of Singapore on Feb 1.

The Juvenile Court heard that at about 11am that day, the juvenile assaulted the teacher who tried to stop him from leaving.

The student used his shoulder to hit the victim's chest, and punched him a few times on the chest.

When the teacher tried to break free, the boy held onto the victim's neck and pushed him to the wall, causing him to fall.

The teacher lodged a police report after seeking treatment in hospital.

The court called for a probation report on May 27. Bail of $8,000 was offered.