The school has around 360 students, of whom 225 hail from outside India, being children of expatriates working in and around Pune.

On Friday morning, 20-25 MNS activists stormed the premises. Shouting slogans, they ransacked the guard’s cabin and hurled stones at the glass windows at the entrance, said Rajendra Natu Mandekar, a watchman, in an FIR with the Hinjewadi police.

“On August 13, MNS activists had requested the school authorities to celebrate Independence Day with the involvement of its students. But there were no students at the school on August 15. MNS activists protested outside and inside the school,” said Dilip Shinde, inspector.

“More than 60 per cent of the students are from other countries. The school authorities said that due to a long weekend, parents took their children home and the school granted them leave. We have arrested 11 people and are investigating the attack,” Shinde said.

The president of the MNS’s Bopodi unit said, “Institutions, organisations, schools and people should be proud of our country and respect its culture. If the school does not even celebrate Independence Day, then the MNS’ action is right.” School authorities were not available for comment.