YOU SAID:

I didn't know much about math until I went to high school

INTO JAPANESE

私は高校に行くまで数学についてあまり知りませんでした

BACK INTO ENGLISH

I did not know much about mathematics until I went to high school.

INTO JAPANESE

私は高校に通うまで数学についてあまり知りませんでした。

BACK INTO ENGLISH

I did not know much about mathematics until I attended high school.

INTO JAPANESE

私は高校に通うまで数学についてあまり知りませんでした。

BACK INTO ENGLISH

I did not know much about mathematics until I attended high school.