It depends on the school. Most usually look throughout your education years, but they tend to focus on 7th and 8th grade years. This includes grades, test scores, behavior, and extra curricular activities, such as clubs and sports.
You can start by saying what you enjoy about the school. What activities have you joined, what the classes are like, what types of sports teams they have, what the...
I'm glad you know how wrong this behavior is. If you hear something like this being said, tell the person that they're ignorant and offensive and they need to stop....