YOU SAID:

I am doing very bad at school my mom thinks i am a failure

INTO JAPANESE

私は学校で非常に悪いことをしています

BACK INTO ENGLISH

I am doing very bad at school

INTO JAPANESE

私は学校で非常に悪いです

BACK INTO ENGLISH

I am very bad at school

INTO JAPANESE

私は学校がとても下手です

BACK INTO ENGLISH

I am very bad at school