A Gold Coast grandmother has slammed her granddaughter's school, after she claims more than 100 high school students were left "humiliated" and given all-day detention for not complying with the school's dress code.
Fiona Brock told SBS News that her granddaughter was one of the students of Queensland's Upper Coomera State College, who was "put in detention for the whole day" in response to what they were wearing on the first day of the school year.
She spoke to SBS amid outrage involving another Queensland school after it was confirmed more than 100 students had been given detention for wearing the wrong shoes.
"(They were) singled out in front of their peers," she said of her granddaughter and other students.
Ms Brock said the students were left in detention last week "with nothing to do but write in their diaries".
Ms Brock claimed that many of the students were not following a new dress code rule that required them to wear leather shoes.
She hit back at the school's decision, saying some families in the area do not have the means to afford such shoes.
"(The school) acted unjustly, did not follow procedural fairness, their own policies or those of the Queensland Department of Education and Training," she claimed.
Another mother of three students at the school told the Gold Coast Bulletin that her children were "distraught" after the incident and didn't want to return to school.
Upper Coomera State College has declined to comment on the issue.
Ms Brock's comments came after more than 100 Brisbane high school students were similarly given detention for wearing the wrong shoes.
The Gap State High's new uniform policy has angered parents who said they cannot afford to discard shoes that were acceptable in previous years.
"It's kind of uniform policy gone mad," parent Karen Bishop told ABC radio.
Queensland Teachers Union President Kevin Bates confirmed 103 students had been sent to detention at The Gap but defended the uniform policy.
Mr Bates was concerned the issue had caused arguments between parents on social media and said the appropriate channel for discussion was P&C meetings.
"I think the P&C meeting next Monday night will be a lot fuller than what it usually is," Ms Bates said.