YOU SAID:
i can't wait to start school this upcoming year
INTO JAPANESE
私はこの来年学校を始めるのが待ちきれません
BACK INTO ENGLISH
I can not wait to start school next year
INTO JAPANESE
私は来年学校を始めるのを待つことができません
BACK INTO ENGLISH
I can not wait to start school next year
You should move to Japan!