In the 22-second clip, a group of students from Meadowhead School Academy Trust in Batemoor can be seen walking together before a female student is hit in the back and then shoved to the ground by another student.
According to the caption that was posted to the video, the girl was getting bullied "on a daily basis."
The woman said: “If you see your child in this video I suggest you give them a serious talking too about bullying and the effect it has on children physically and mentally.
In an immediate response, the school said they were aware of such an incident.
Sarah Gillott, the school's personal assistant to the Headteacher and Clerk of Governor said: "The headteacher and senior leaders are aware and the students involved will be dealt with in accordance with the school's behaviour policy."
South Yorkshire Police has been contacted for more information.