A key stage is a stage of the state education system in England, Northern Ireland and the British Overseas Territory of Gibraltar setting the educational knowledgeFacts, information, and skills acquired through experience or education; the theoretical or practical understanding of a subject. expected of students at various ages.
Key stages are the groups that have been set up to administer progressive, standardised exams during a child’s education in England and Wales.
Each key stage consists of a certain range of school years.