senior high school

US /ˌsiː.njər ˈhaɪ skuːl/
UK /ˌsiː.njər ˈhaɪ skuːl/
"senior high school" picture
1.

scuola superiore, liceo

a high school for students in the higher grades, typically grades 10-12 or 11-12, preparing them for higher education or vocational training

:
My brother is currently attending senior high school.
Mio fratello sta attualmente frequentando la scuola superiore.
After graduating from senior high school, she plans to go to university.
Dopo essersi diplomata alla scuola superiore, intende andare all'università.