行かなくてもよい

don't have to go

→ 行く
phrase Rare #37,119
don't have to go A formal or somewhat old-fashioned way to say that going is not necessary or required. 行かなくてもいい is more common in everyday conversation.
JA: 明日は仕事に行かなくてもよい。
EN: You don't have to go to work tomorrow.

彼は今日は学校に行かなくてもよい

He doesn't have to go to school today.

彼は学校へ行かなくてもよい

He doesn't have to go to school.

彼女は土曜日学校に行かなくてもよい

She doesn't have to go to school on Saturdays.

君がもし行きたくないのなら行かなくてもよい

If you don't want to go, you don't have to.