Sorry - there are a few mistakes.
It will be interesting to see if you will get an A grade or not.
Are there any errors in that sentence?
Is "look" right? - no, 'see' is used in the sense of 'wait and see'. Look would be used to refer to the process of looking at the results on a sheet or on a website.
So 'It will be interesting to see if you get an A or not' - 'I will go and look next week when the results are posted'.