"We took milk and flaked rice. After some time we fell unconscious. People took us to the hospital," said Vishnu Bhagat, a student.
The students were taken to the Rajendra Institute of Medical Sciences (RIMS) for treatment.
The condition of at least 30 children was said to be critical.
Chief Minister Shibu Soren who visited the hospital, announced a compensation of 100,000 rupees for the dead and also promised to meet the medical expenses of those admitted to hospital.