Finland
9 years of primary school (Peruskoulu) are compulsory.
- Kindergarten (optional): 6–7 years
- 1st grade: 7–8 years
- 2nd grade: 8–9 years
- 3rd grade: 9–10 years
- 4th grade: 10–11 years
- 5th grade: 11–12 years
- 6th grade: 12–13 years
- 7th grade: 13–14 years
- 8th grade: 14–15 years
- 9th grade: 15–16 years
- 10th grade (optional): 16–17 years
Read more about this topic: Primary Education