upper school
Noun
Meaning
(UK, education) A school found within secondary education.
(education) A section of a larger school.
Source: en.wiktionary.orgExamples
The same approach has been applied in the Upper School to field sketching in art classes and scrutinizing samples under smartphone microscopes in biology.
Annie Wright Schools are offering Previews for each division: Lower School, Middle School and Upper School.
Students, many along with their parents, drove from the Lower School Campus about 10 minutes to the Upper School Campus.
This eliminated choice of school in most areas: instead of having two secondary schools in one town, one school became a middle school and another became an upper school.
Winston never even made it into the upper school because he would not study the classics.