noun
student days; school days
Refers to the period of one's life when one was a student, typically including school and university years. Often used in nostalgic or reflective contexts.
学生時代の友達と久しぶりに会った。
I met a friend from my student days for the first time in a long while.
彼は学生時代、よく図書館で勉強していた。
During his school days, he often studied in the library.
Refers to one's youth or adolescence more broadly, often with a poetic or nostalgic nuance, while 学生時代 specifically denotes the period of being a student.
Compound of 学生 (student) and 時代 (era, period). The meaning is transparent from its components.