If you set a high goal, you will get an intermediate goal; if you set an intermediate goal, you will get a poor goal. There is an idiom (proverb) What's this called?
This idiom means "Seek the best, get the best, get the worst, and get nothing for the worst". It means that if we pursue high goals, we may get moderate results; If you pursue intermediate goals, you may only get very low results; If you pursue low goals, you may get nothing. This idiom tells us that in order to get good grades, we must set high goals and work hard for them.