A 13-year-old boy could end up on the sex offenders' register over allegedly taking a picture of his genitals and sending it to classmates, the South Australian Parliament has been told.

Independent MP Bob Such said the student allegedly took the picture with his school iPad.

Dr Such said the case showed the law was flawed.

"The law as I understood it was to protect children from predators, not to turn silly 13-year-olds into criminals," he said.

"Under our current law there is no real separation between how we deal with adult sexual predators and these silly 13-year-olds and that's my real concern that, rather than protecting children from adult predators, what the law is currently doing has the potential to turn these 13-year-olds into criminals."

A spokesman for the Education Department said parents were told of the issue, several students were suspended and the matter was now with police.

South Australian Attorney-General John Rau said the Government would take a look at the issue.

"It clearly was never the intention of the Government and I suspect even the Parliament to capture foolish behaviour by adolescent people," he said.

"It's necessary before anyone goes on the register to actually be convicted of an offence and it's not clear yet whether there will be a prosecution."

Mr Rau said judicial discretion would be applied if the case went to court.

The Government said there was no one who was currently a minor on the register.

Mr Rau said any child who is before the Youth Court generally is not put on the register.

"The chance of them being put on the register by a judge is very, very small unless their offence is so reprehensible that the judge considers it necessary and at the moment we do not have anybody in that category," he said.

Police Commissioner Gary Burns said police were working with the Attorney-General to support a legislative change that would differentiate between juveniles committing low-level offending and other more serious criminal offences.

Officers also have been running sessions in schools to tell students of the risk of life-long repercussions from seemingly harmless pranks.

Police later advised the boy had been reported for producing and disseminating child exploitation material.