YOU SAID:

School can be really hard and challanging at times

INTO JAPANESE

学校は時々非常に困難でやりがいがある

BACK INTO ENGLISH

School is sometimes very difficult and challenging

INTO JAPANESE

学校は時々非常に困難で挑戦的です

BACK INTO ENGLISH

Schools are sometimes very difficult and challenging

INTO JAPANESE

学校は時々非常に困難で挑戦的です

BACK INTO ENGLISH

Schools are sometimes very difficult and challenging