ˈhigh school noun

1. [uncountable and countable] a school in the US and Canada for children of 14 or 15 to 18 years old ⇒ junior high school
in high school
We were friends in high school.
high school students
high school graduates

2. [singular] used in the names of some schools in Britain for children from 11 to 18 years old:
Leytonstone High School for Girls
⇒ secondary school

[TahlilGaran] Dictionary of Contemporary English ▲