Key Stage

A Key Stage is a stage of the state education system in the UK. The stages are as follows:

• Key Stage 0: Nursery and reception years (3–5 years old). More commonly known as the "Foundation Stage"
• Key Stage 1: Years 1 to 2 (5–7 years old)
• Key Stage 2: Years 3 to 6 (7–11 years old)
• Key Stage 3: Years 7 to 9 (11–14 years old)
• Key Stage 4: Years 10 to 11 (15–16 years old)
• Key Stage 5 (not such a commonly used term): Years 12 to 13 (16–18 years old)

The National Curriculum sets out targets to be achieved in various subject areas at each of the Key Stages.