After school; the period following the end of classes, often used for club activities, study, or meeting friends.
放課後に図書館で勉強する。
I study in the library after school.
放課後は部活動に参加している。
I participate in club activities after school.
放課後、友達とカフェに行った。
I went to a café with friends after school.
放課後の時間を有効に使おう。
Let's make good use of our after-school time.