Actually this part isn't totally correct. They can talk to children at school under section 17 of the CP Act and don't need to have a support person with the child unless it is believed the child needs one due to age etc or asks for one. A magistrate can also grant a TAO which only allows DChS to have contact with a child so that child can be interviewed. However if this order is granted there is no provision which states that the child must have a support person.

I found more information on the interviewing process here http://www.childsafety.qld.gov.au/p...-assessment/interview-child-process.html and here http://www.childsafety.qld.gov.au/p...estigation-assessment/support-guide.html