School with education level between primary school and university.
In the UK and Ireland, a state school attended between the ages of 11 and 16 or 18.
The federally designated, graduation-separated classification of grades 9–12 (approximately ages 14–18), regardless of whether they are compiled together in one school or separate from the other grades.
Middle school; junior high school; a school that one attends between the ages of 12-17 (equivalent of grades 7-10 in North America, and years 7-10 in Australia).
A second-year undergraduate student in a college or university, or a second-year student in a four-year secondary school or high school.
A three-year-old horse.
The second in a series, especially, the second of an artist’s albums or the second of four years in a high school (tenth grade) or university.
Sophomoric.