Secondary education in Wales covers the period between the ages of 11 and 16. In this period a child's education is divided into two main stages of the National Curriculum: Key Stages 3 and 4.
Key Stage 3 includes years 7,8, and 9
Key Stage 4 includes years 10 and 11
Secondary schools in Wales must, by law, teach the basic and the National Curriculum to their pupils. The basic curriculum consists of religious education, sex education, personal and social education, and for 14- to 16-year-olds, work-related education, the Welsh Baccalaureate is now online for pupils at KS4. Schools must also provide careers education and guidance for all 13-16-year-olds.
At Key Stage 3, the National Curriculum consists of the "core subjects" of English and Welsh, mathematics and science, and the "non-core subjects" of Welsh second language, modern foreign languages, design and technology, information technology, history, geography, art, music, physical education and religious education. At Key Stage 4, only five National Curriculum subjects are mandatory (English, Welsh or Welsh second language, mathematics, science, and physical education) and schools have greater flexibility to provide optional subjects that meet the needs and interests of their pupils. The majority of learners at this key stage follow courses leading to external qualifications, principally GCSEs.