In the UK, Key Stage 2 (KS2) is the legal term for the four years of schooling in maintained schools in England and Wales normally known as Year 3, Year 4, Year 5, and Year 6, when the pupils are aged between 7 and 11 years old. At the end of Key Stage 2 (Year 6), students are expected to be at level 4. Here is a breakdown of the key stages in the UK:

Primary School

• Key Stage 1: 5 to 7 years old (Year 1 and Year 2)
• Key Stage 2: 7 to 11 years old (Year 3, Year 4, Year 5, and Year 6)

Secondary School

• Key Stage 3: 11 to 14 years old (Year 7, Year 8, and Year 9)
• Key Stage 4: 14 to 16 years old (Year 10 and Year 11)

It is important to note that the end of each summer term, the school must write a report on the childs progress and talk it through with the parents.