Can you answer this question ?

The CRQ is getting better. Now, the problem with "gaps" in general is that you could negatively impact the higher performing population and still "close the gap." Instead, you will want to rephrase to focus on the core issue. In your study, this may be low rates of college readiness among students from diverse backgrounds.

You can use low rates of college readiness among students from diverse backgrounds as the central question and now that the core issue is identified the core issue in your topic, now revise all elements – make a new main title, CRQ, new problem and add new purpose statement and include cited evidence in the new purpose statement.