collegial; relating to a college/school; (also) friendly and cooperative among colleagues
Por favor, entre em contato com Joanna Carlton, do colegial.
Please contact Joanna Carlton from the high school.
— Prenda-Me se For Capaz (2002)
Foi a única coisa que você me disse durante o colegial.
That was the only thing you told me during high school.
— Em Chamas (2018)
Não falo francês desde o colegial.
I haven't spoken French since high school.