junior high school

junior high school (countable and uncountable, plural junior high schools)

1. (education) A school for children who have completed elementary school or grade school, but are not yet old enough for high school. In the US, it often includes grades 7 and 8, and possibly also 6 or 9.
   • 1919, Guy Vernon Bennett, The Junior High School, Warwick & York, page 1:

     In California the term originally used was "intermediate high school," later shortened to "intermediate school," but the term "junior high school" is rapidly supplanting the others.

• (school between elementary and high school): intermediate high school, intermediate school, junior high, middle school