The incident occurred in Charsadda district of outskirts of Peshawar bordering restive Mohmand tribal agency.
The police said that the attackers targeted the driver over personal enmity but the girl was shot in the hand.
The injured student has been shifted to District Headquarters Hospital Charsadda.
Law enforcement personnel are further investigating the incident.
Information Minister Mushtaq Ghani said that firing incident was result of personal enmity.