Read the excerpt from a personal essay titled "First Day." What is the main idea of the essay? The first day at any new school is frightening, and the first day at MacArthur Middle School was no different. I had never learned the ins and outs of any school before I had to switch to another. So I readied myself for the full impact that a first day of school would bring. However, I was surprised when I quickly learned everything about the school. I even made new friends in record time. For the first time, I felt that I was a part of a school and that I belonged to a community. My time at MacArthur Middle School was one of the happiest times in my life.