YOU SAID:
i am very bored and should be in school
INTO JAPANESE
私はとても退屈していて、学校に通うべきです
BACK INTO ENGLISH
I'm so bored and should go to school
INTO JAPANESE
私はとても退屈しているので学校に行くべきです
BACK INTO ENGLISH
I'm so bored that I should go to school
INTO JAPANESE
私は学校に行かなければならないほど退屈しています
BACK INTO ENGLISH
I'm so bored that I have to go to school
INTO JAPANESE
私はとても退屈なので学校に行かなければなりません
BACK INTO ENGLISH
I'm so bored that I have to go to school
That didn't even make that much sense in English.