Question: what age is form 5?
Answer: Key Stage 3 - Years 7 to 9 - for pupils aged between 12 and 14 years old, Key Stage 4 - Years 10 to 11 - for pupils aged between 15 and 16 years old, and. Key Stage 5 - Years 12 to 13 - for pupils aged between 17 and 18 years old.