The toll in Monday’s accident, in which a school van collided with a truck due to fog, reached 14 on Thursday with one more child succumbing to injuries.
With this, the total number of children killed has reached 13. The one other person to die was the driver of the van.
Twenty other children, in the age group 5-8, had been injured.
A child, who had been admitted to a hospital, succumbed to his injuries today, police said.
The school van was carrying students of Arjun Public School, located near Saha.
Chief Minister Bhupinder Singh Hooda had ordered a magisterial probe to look into the circumstances leading to the accident.