I'm the youngest of 3 kids, so I followed both of my siblings through school. My sister led the way as a great student, very well-behaved, never got into trouble. Then my brother would get the same teachers and they would be shocked that he was from the same family. He would cut school. talk back, be generally disruptive. Then I would come along and the teachers would wonder what my story was. Some expected me to be like my brother until I would prove them wrong. I was much more like my sister. A high school dean used to stare me down after learning who my older brother was. He was just waiting for me to slip up, but he finally got bored and gave up.
In 5th grade, I was put into a class with a teacher who had a terrible time with my brother. My parents had to meet with her several times about his behavior and my brother claimed she was awful and hated him and he never did anything wrong. As soon as my mom found out I was placed in her class, she called the school to try to get me moved. The school said the classes were full, but they could switch me if any kids in the other classes didn't show up. I would have to start school in her class.
On the first day, she came over to me and whispered in my ear, "You know, you and I have something in common. We're both tall. I know what it's like to be the tallest girl in the class. And did you know that my father works in law enforcement, just like yours?" She obviously didn't assume I would be like my brother and she was trying to connect with me from the start. I went home and told my mom that I liked her and didn't want to switch out of her class. I ended up having a good year in that class and my mom said the parent/teacher conferences about me were totally different. They ended up liking her too.