The guidelines change every couple of years, which is why CPR qualifications need to be reviewed - annually I think. And general first aid is every 3 years from memory. Mine must be up now, I think I was pg with DS1 when did first aid most recently. I'd better look into doing another course.

In Qld, and probably the other states, The Red Cross and St Johns both run special first aid courses tailored to parents and other carers.