The National Assessment Agency (NAA) was, until December 2008, a subsidiary unit of the Qualifications and Curriculum Authority (QCA), an executive non-departmental public body (NDPB) of the Department for Education and Skills (now the Department for Education) in England and Wales.
The agency took over the delivery and administration of the National Curriculum Tests in England, previously undertaken by the QCA to whom they are accountable.
As well as being responsible for the national curriculum tests, the agency worked work with examination bodies in further reforms of the GCSE and A-level examinations in England and Wales.
The agency claimed that it would modernise the examination system, for which it was given a remit from the government of £100m.
Prior to the launch of the NAA, Charles Clarke, the then Secretary of State for Education and Skills stated that the separation of these two roles, made possible by the creation of the new agency, would decrease what was regarded by the government as conflicting responsibilities.