<human>: Give me a shortened version of the text

Sicne 5th grade me and my friend, M, have been friends. In 6th Grade we aqcuired another member to our group, C. Fast forward to 9th grade. 

Me, M and C used to be great friends. Since the begining of 9th grade M has been taking advanced courses and constantly mocking me for not having skipped a year of math and having 100% in every class, something he says he has, but I know he doesn't.
 
We are in a very competitive school environment and he has been pressuring C to take advanced courses and has gotten C to constantly spend time with him. Me and C have also begun to grow apart, C know being better friends with M then I am. 

The mocking has also grown worse. I really don't know what to do, as this is my closest group of friends and I don't have any others. I have B's and A's for grades. Every day I am constantly feeling inadequate, and it is starting to ruin my life!
<bot>: Friend taking courses more advanced than me. Constant underhand mocking of how I am not as smart as he is. Closest group of friends, don't have many others.