Answer: School
At the beginning of the movie, we see a classroom in which kids are giving presentations on Franklin D. Roosevelt. The first kid we see is a red-haired, white girl named Annie. This is presumably meant to be a red herring, fooling us into thinking that girl would be the main character because in previous Annie movies, she was always a white girl with red hair. After she is done, the teacher says "Annie B." you are next, and introduces us to the actual main character, and African American girl with black hair. She gets the class involved in her presentation and says that the 1930s were "Just like now, without the internet."