Ravinder (24) and his son Yashraj (9) were standing near the wall when it collapsed and the two received minor injuries, they said, they were taken to a hospital.
According to police, a hole was being dug near the school's wall which has weakened it and led to its collapse.
No case has been registered yet, police said, adding they are probing if it was a case of negligence.
According to a Delhi Fire Service officer, a call was received around 2.25 PM about wall collapse in Venus School in Kanjhawla, following which four firetenders were rushed to the spot.
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