Donna Munro, the mother of a 16-year-old girl with cerebral palsy, said she was forced to remove her daughter from Taieri College in July because the school failed to protect her from bullying.
"She was kicked, pushed over, they mimicked how she walked and talked, they threw food at her, she was ostracised - it all happened on a daily basis.
"It wasn't just one or two students. She seemed to be the whipping girl for a large part of the school population."
A perceived culture of bullying within Taieri College, in Mosgiel, will be discussed at the school's board of trustees meeting this week.
More parents concerned about bullying at the college have come forward and called for the school to take a tougher stance.
Board chairman Shane Boyle said he was surprised by the extent of the problem.
He said none of the issues raised by the ODT had come to the board's attention.
"I only know what's reported to us. I think we've got to investigate the issue further. We have to look at ourselves and see what else we can do to make the situation better. One of our missions is to create a safe environment - we have to do that."
Ms Munro said the situation came to a head several times during the past two years, and a different group of pupils was "spoken to" by the school each time.
"I was in contact with the school on a regular basis to complain about the bullying. But no-one was suspended. The principal addressed school assemblies and told them to stop it, but nothing seemed to work."
She wanted the school to make bullies more accountable for their actions.
"Suspension would send a clear message that it won't be tolerated. At the moment, it looks like the problem is here to stay."
Another parent, who declined to be named, said her 14-year-old daughter tried to commit suicide last year after a 12-year-old Taieri College pupil threatened to rape and kill her.
The mother said she asked the college to expel the boy, but was told the school could not because some of the texting was done outside school hours.
The school did not seem to be interested in what had happened during school hours, she said.
"They also said my daughter hadn't been to see anyone at the college about the bullying, and yet here she was doing it now by wanting to commit suicide. She had had enough and was crying out for help," the woman said.
Like most bullied pupils, she did not feel she could go to anyone at the college for help for fear her tormentor would carry out his threats.
The mother notified the board of trustees but they wanted her complaint in writing.
"At the time, I didn't have the time or energy to be writing to them. I was putting that into my daughter. Why couldn't I just tell them over the phone? They need to be more flexible.
"We did go to the police and laid a complaint with them and they took it very seriously and dealt with the boy through youth aid."
She believed the school's stance on bullying was farcical.
When her son (a year 11 pupil at the school) punched a fellow pupil for spreading his sister's intention to commit suicide, the college involved the police and a meeting was held with a youth aid officer, the principal, staff members from the college and the pupil's family.
"There was no leniency given to my son as the college has a 'zero tolerance' policy for bullying - what a joke.
"My son was put into the withdrawal room for a week, which is like detention from the start of the school day until the end of the school day, and was not allowed to associate with his friends at any intervals, and of course he had to give an apology to the boy and family.
"I was angry. The college did not take into consideration what he had been through and why he had done what he had. The college hadn't protected his sister and weren't taking it seriously. I felt very let down by Taieri College, and still do, as my daughter and other children spend a lot of time there. So is it safe?"
