The shallow, 7.1 magnitude quake killed at least 225 people in total and caused major damage across states in the centre of the country.
Desperate searches for survivors under the rubble are continuing.
Hopes rose at the school when a girl was located alive and a delicate operation to rescue her is under way.
Dozens of buildings collapsed across the country, including several churches where worshippers were killed.
Families with young children could be seen sleeping outside their homes in the street in the capital overnight.