I'm also going into my 10th grade year of highschool.
I don't have many pleasant memories for 9th, or anything before 6th, but I remember 8th grade we had a... "health" lesson for our Living Environment class. Since it was honors, and we had a very young teacher; we were all awkward and tryin' to be the mature smarty pantses we usually were, but... there was a joke made from the teacher. It involved oranges and other fruits, and I'll leave it at that.
Also in that class, I'd passed out one day due to dehydration and just overall weakness, but I remember my friend completely lost it and started freaking out because the teacher had to carry me to the nurse. Fun times.