noun, adverb
after school
Refers to the time after classes end for the day. Used both as a noun and adverbially.
放課後に図書館で勉強する。
I study in the library after school.
放課後のクラブ活動が楽しみだ。
I look forward to club activities after school.
Compound of 放課 (release from class) and 後 (after).