Your surroundings in a dream has just as much meaning as people, animals, or objects. Schools, forests, water scenery, etc, are all projecting the main issue that you are experiencing. What you are surrounded by in a dream reflects the problem or issue at hand. A symbol for what it is that you are dealing with.
Negatively, your surroundings reflect your biggest concerns or problems. Whatever it is in waking life that you are thinking about the most.