He said doctors, nurses, psychologists, counsellors, lawyers, judges, social workers, teachers and police officers who work with children, and even volunteers for groups such as Plunket, should have to pass national exams on working with children.
"It may be that you could graduate in social work without a single question about child protection. I don't think that's good enough," Dr Wills said.
"It's appropriate for the Government to say to the academic institutions that we think there should be standards."
He said privacy laws should be reversed to require schools, health, welfare and justice services to share information when any one of them raised child protection concerns.
He also suggested enrolling all newborn babies on the national immunisation register and with a family doctor and a Well Child service, unless the parents opted out - reversing the current rules requiring parents to opt in.