Police said a motorcycle collided with three children outside the Heanor Gate Spencer Academy on Kirkley Drive, Heanor, around 6 p.m.
A spokesman for Derbyshire Constabulary said: “Two of the children have been taken to hospital.
“The two young men who were riding the motorcycle ran off towards Shipley Park.
“Now witnesses are wanted.”
Anyone with information is asked to contact the police stating incident number 591 of 25 November.
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