YOU SAID:

I have school in 4 hours yay

INTO JAPANESE

私は4時間以内に学校に行きます

BACK INTO ENGLISH

I'm going to school in four hours.

INTO JAPANESE

私は４時間後に学校に行きます。

BACK INTO ENGLISH

I will go to school in four hours.

INTO JAPANESE

私は４時間後に学校に行きます。

BACK INTO ENGLISH

I will go to school in four hours.