Where exactly is the school located in To Kill a Mockingbird?

Scout and Jem live on the main residential street in town. Think of this street going straight up and down. (It would help to draw this on a piece of paper.) On the left side of the street, from top to bottom, you have Miss Dubose's house, Miss Rachel's, and then the Finch house. Across the street, on the right side, you have Mr. Avery, Miss Maudie, and Miss Stephanie. If you keep moving down the street (towards the bottom of the page), you come to the Radley house (on the left side of the street) and the oak trees. Keep going further down this way and you come to the school.

So, if Scout walks out of the front door of her house, she would be facing Miss Maudie's house across the road. She would turn right, moving south/down, and pass the Radley house, the deer pasture, and the two oak trees, en route to the school. In Chapter 1, Scout notes "The Maycomb school grounds adjoined the back of the Radley lot." The children would walk past the Radley house on their way to school. At the end of the novel, when Scout and Jem are walking back from the pageant at school, they will be heading north/up: in the direction of the Radley house and eventually their own house.