YOU SAID:

this school needs to end today right now at this moment

INTO JAPANESE

この学校は今この瞬間に今日終了する必要があります。

BACK INTO ENGLISH

This school should end today at this moment.

INTO JAPANESE

この学校は今日この時点で終了するはずです。

BACK INTO ENGLISH

This school should end today at this point.

INTO JAPANESE

この学校は本日終了します。

BACK INTO ENGLISH

This school ends today.

INTO JAPANESE

この学校は今日終了します。

BACK INTO ENGLISH

This school ends today.