http://www.legislation.gov.uk/uksi/1991/2896/article/10/made

The Education (National Curriculum) (Attainment Targets and Programmes of Study in Mathematics) Order 1991

Key stages in education

National curriculum

King's Printer of Acts of Parliament

2012-08-15

EDUCATION, ENGLAND AND WALES

Section 4(2) of the Education Reform Act 1988 places a duty on the Secretary of State to establish the National Curriculum by specifying appropriate attainment targets, programmes of study and assessment arrangements for each of the foundation subjects.