| Elementary school | Junior high school | |||
---|---|---|---|---|---|
Grade level | 4th grade | 5th grade | 6th grade | 7th grade | 8th grade |
Age range | (9 - 10 years) | (10 - 11 years) | (11 - 12 years) | (12 - 13 years) | (13 - 14 years) |
Age (years) | 9.7 ± 0.5 | 10.7 ± 0.5 | 11.7 ± 0.5 | 12.6 ± 0.5 | 13.4 ± 0.5 |
Female/Male | 16/16 | 15/10 | 16/10 | 16/9 | 0/10 |