A Class 4 boy was allegedly beaten up by a with a duster on his head for not doing homework on Thursday in LB Nagar.G Nikhil (9), a resident of Jangaiah Nagar in LB Nagar is studying Class 4 at Government Primary School. On Thursday, around 11.30 am, a Telugu teacher Sujatha hit the boy with a duster over incompletion of homework.The suffered a head injury and was shifted to Area Hospital in Vanasthalipuram where he is undergoing treatment.A case was registered on the school teacher. No arrest has been made yet.