Because... You told me that you still remember your mile from the 7th grade, and told Sayomi that when you took the SATs, it wasn't so bad. So I concluded that you're in high school. Also, you told me you read a paper to some people and you all agreed it sounded to much like a college paper, which I think is a reference used more in high school. Of course, there is always the chance that you just took the SATs before her, then you would be in 8th grade.