If you dream of the school, it could be interpreted as the past and the future. If you are still going to school it is obviously the place where you spend most of your time and experiencing many different emotions, therefore it reflects in the dreams. If you are not going to school for a long time, then the dream could indicate the lessons you learn at your waking life. The new experiences associates with the school, because it is the place where children learns something new every day.
Dream dictionary: dreaming about going back to school dream meanings
…there were legions to swarthy Dagos and bullet -headed negroes, vied with one another in their mad efforts to escape the falling bricks and burning timber. In trying to elude one death men only courted another, and the dreamer saw scores of human beings who leaped from burning buildings, only to be dashed to pieces on the cruel stone pavements. Nor was the heroic element wanting, for many men and women perished in their efforts to rescue the infirm and sick, and to help those to escape, who were either too old or too young to help themselves. For some time, the dreamer was merely a spectator, but very suddenly, and by some inconceivable impulse, she became imbued with personal interest in what was going on, and, labouring under the impression that her home and family were in danger, fought her way to get to them. The city was…