Peak Bodies are organisations, often formed out of grass roots activism or interest in a particular issue, which act as a representative voice for the people and or groups who are their members.
A Principal Act is the original piece of legislation enacted to introduce a particular policy. A Principal Act can be amended (changed) by Amending Acts.
The term Protestant describes a person or organisation affiliated with any one of the Protestant Churches. With child welfare, services were often clustered under the umbrella terms of Protestant and Catholic.