The incident occurred at a prominent school Tuesday when a dance teacher touched the girl's private parts during a summer camp.
On returning home, the victim told her mother about the incident.
The girl's mother and some women activists went to the school and thrashed the teacher.
He was then handed over to the police.
SRK-Gauri anniversary: B-Town stars and their non-filmi better halves
Birthday special: Popular mothers and daughters in Bollywood
Spotted: 'Kaabil' star Hrithik Roshan with dad Rakesh Roshan
'Rock On 2' trailer launch: Farhan, Shraddha enthrall audience with live gig
Photos: Deepika Padukone, Sushmita Sen with daughters at Mumbai airport