Anyone who works face-to-face with children in a paid, self-employed or voluntary capacity, must have a Working With Children Check (WWCC) clearance, unless they qualify for an exemption.
A WWCC involves a National Police Check (criminal history record check) and a review of reportable workplace misconduct. The outcome of a check is either a clearance to work with children, or a bar against working with children.
If cleared, a check is valid for 5 years, however cleared applicants are continuously monitored.
If you want to verify that someone has a WWCC clearance, you can do so online.Check online