Bullies targeting a 15-year-old schoolgirl set up a website devoted to their victim.
Jodi Plumb, 15, from Mansfield, Nottinghamshire, was horrified to discover an entire site had been created to insult and threaten her.
The site contained abuse concerning her weight and even had a date for her "death".
Jodi's mother has called for tougher action by her school against bullies.
The school, Queen Elizabeth School, has defended itself, saying it has a well-defined anti-bullying policy.
Jodi's family says there has been a two-year campaign of intimidation and she has twice been attacked in school.
I was really hurt because I did not know who'd done it
Jodi found out about the website when a fellow pupil tried to take a photograph of her with a digital camera and said it was for the web.
She said: "I was really hurt because I did not know who'd done it. I was just really upset."
Jodi's mother, Gail, felt the bullying had disrupted her daughter's education at a crucial time.
She said: "I want Jodi to be able to go back to her GCSEs without any problems.
"Hopefully, any other children with problems can then come forward to speak because there is no use in suffering in silence."
Mrs Plumb was also concerned how little action the school had taken.
But head teacher Paul O'Brien rejected this, saying the school's anti-bullying efforts had been recognised in a recent Ofsted report.
The site has now been removed.