YOU SAID:
For my end of school exams I took biology
INTO JAPANESE
私は学校の終わりの試験のために生物学を取りました
BACK INTO ENGLISH
I took biology for an exam at the end of school
INTO JAPANESE
学校の終わりに生物学を受験しました
BACK INTO ENGLISH
I took biology at the end of school
INTO JAPANESE
私は学校の終わりに生物学を取った
BACK INTO ENGLISH
I took biology at the end of school
Come on, you can do better than that.