There are many different kinds of effects of bullying and none of them are good, as we all know, and parents have to be weary about it always. Now, a new study of nearly half a million students has found that students who have failed a class and thus repeated the grade have higher risks of being victims of bullying in countries around the world. 

Addressing and preventing school violence, including bullying, is a specific target of the United National Sustainable Development Goals. Few studies involving large samples have examined the association between grade repetition and bullying victimisation.