A 17-year-old in Japan is typically in High School 3 (third year of high school).
The Japanese school system is structured as follows:
- Elementary School: 6 years (ages 6-12)
- Junior High School: 3 years (ages 12-15)
- High School: 3 years (ages 15-18)
Therefore, a student who is 17 years old would generally be in their final year of high school. This corresponds to High School 3, as shown in the Grade Placement Chart from Kyoto International School.
