A Class 11 student at DPS, Sushant Lok here slapped a security guard and then joined his father and relatives in beating up the man with baseball bats following an argument over parking a car.
The 51-year-old guard, Avdesh Sharma, is in a hospital with a fractured leg.
At around 3pm Monday, he saw the 17-year-old park his car in front of the main gate of the Delhi Public School (the legal age for driving is 18). He asked the boy to move the car as it would obstruct school buses.
"The boy used abusive language and refused to budge. He then slapped me," Sharma said.
The student called home and within minutes, his father, an uncle and three more relatives were in school. The father and uncle allegedly slapped the guard and then all of them, including the boy, had a go at him with the baseball bats.
An FIR has been registered against the boy and his father. The school refused entry to the student on Tuesday.
"It's the student's fault completely. This kind of violence is not acceptable. How can a student beat up a guard on duty?" said principal Ruchi Seth. The board would decide on action against the student, she said.
The father, however, said the guard abused his son, who was beaten up other guards and bus staff when he tried to park the car at another gate. His son was innocent and if the FIR wasn't withdrawn, his career would be ruined, he said. The police are to examine the school's CCTV footage on Wednesday.