7th
7th grade (and particularly 6th grade) was pretty rough for me. The transition from elementary school to middle school was strange because everyone formed groups that didn't exist in elementary school.
I didn't have many friends and I pushed away the one guy that wanted to be friends because I didn't think he was cool enough. Since I desperately wanted to be 'cool' I couldn't be seen associating with him. Wow... that was stupid of me.
Turns out the 'cool' kids (typically) didn't go on to do interesting things with their lives and the friend that I pushed away did.
So I ended up making the experience bad for both of us and lost a quality friend in the process.
Don't do what I did.
P.S. Starting fifth grade, also starting sixth grade math ftw. Too smart
Sixth grade math... Good times. Is that pre-algebra?