YOU SAID:

I don’t think you have to go to school today because I’m not going home

INTO JAPANESE

私は家に帰らないから今日学校に行かなくてはいけないと思う

BACK INTO ENGLISH

I think I have to go to school today because I will not go home

INTO JAPANESE

今日は学校に行かなければならないと思います

BACK INTO ENGLISH

I think I have to go to school today

INTO JAPANESE

私は今日学校に行かなければならないと思います

BACK INTO ENGLISH

I think I have to go to school today