Professor, I'm concerned about my grades. Do you have a minute?
Of course, how can I help you?
I want to know if I am doing OK.
Let's pull out your scores so far. Do you think you are doing OK?
I am afraid that I might not be doing all that well.
I'm seeing that you are doing OK in some areas, but not so well in others.
I think I could take better notes and read a little more.
You can greatly improve your grades by always reflecting on what you can improve on.
I'm working on it!
Just do your best and I am sure that you will see improvement.