By Sacha Payne
Disability advocates say revelations of a cage built for an autistic child at a Canberra school are just the tip of the iceberg.
The Principal of the school, which cannot be named due to privacy reasons, has been stood down as an investigation is launched.
The cage at the Canberra school was exposed following a complaint to the Australian Human Rights Commission.
Images obtained by SBS show what some schools use as so-called withdrawal areas for autistic children.