"I only beg for you to please sign my petition to ask (the) School to take a stronger stance against bullying and for the government to stop the school getting away with this," the girl wrote.
Her mother said the young girl's life had been changed forever by the overwhelming response and that she had cried while reading the supportive comments.
"She couldn't believe that so many people could care about - in her words - 'an insignificant freak like me'," she said.
"(My daughter) says she is going to print out every comment made on her petition and fill her entire wall with them.
"She reads every one. And she is especially sad to see that so many others are experiencing the same bullying."
Queensland's education department said the school has a "zero tolerance approach to bullying".
"The school has been working closely with the family for some time to resolve their concerns," a Department of Education and Training spokesman told The Courier Mail.
"The school is continuing to work diligently to promote safe and respectful interactions between students."
Where to get help:
• Lifeline: 0800 543 354 (available 24/7)
• Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• Youth services: (06) 3555 906 (Palmerston North and Levin)
• Youthline: 0800 376 633
• Kidsline: 0800 543 754 (available 24/7)
• Whatsup: 0800 942 8787 (1pm to 11pm)
• Depression helpline: 0800 111 757 (available 24/7)
• Samaritans: 0800 726 666 (available 24/7)
If it is an emergency and you feel like you or someone else is at risk, call 111.
- AAP