A Brain Full of Sand

The youngest of the siblings picks the book out of her hands, reads the title and shoves it back into the girl's hands, smirking. "You're really dumb you know. You can't even answer the questions in class. All day, you just sit there."
The three laugh. Another chimes in, "You always get 0 out of 10 for your tests. Why bother coming? You're useless."

A short story about bullying, based on a true story.