"He is on a ventilator in the Critical Care Unit of Tata Main Hospital here," a doctor attending upon him said.
The boy, Simnath Diggi, and a girl student Jasmine Murmu, had been stabbed in the school campus by Madan Gope during school hours on November 1.
While six-year-old Jasmine died of her injuries on the same day, Diggi was admitted to Tata Main Hospital in a serious condition, Suraj Oraon, Officer-in-charge of Sonua police station, said.
Oraon told PTI that they have arranged Rs 15,000 for the family members of the victim boy to meet the expenses for his treatment.
Earlier, the knife-wielding man had attacked the two children who allegedly created noise while attending the class, the police said.
Following the incident, the villagers caught hold of Gope and thrashed him before he was handed over to the police.
