If you check your goals page,they have already indicated where you are.What you must do is to set something that is possible for you to achieve on a monthly,in six months etc.
For example,if you are in the top 20 in your class,maybe 15,you may set your monthly goal to be in the top 10 by the end of the month.
After setting up your goals,you work so hard that you achieve them and even go beyond achievement if it's possible.