The kidnappers reportedly received N10 million before freeing the girls.
The students and teachers of a were freed late Friday. They have now been taken to the police station and a hospital in Kaduna for medical evaluation.
Some of the parents reportedly expressed joy for seeing their children again.
Authorities of Engravers School are yet to make comments about the release.
A text message sent to the spokesperson of Kaduna State police command had not been responded to at the time of filing this report.