Middle School is different from elementary school in so many ways. Middle school is a larger harder version of your elementary school. In middle school you can pick elective classes that are fun and in most elementary's you cannot do that. Middle School academics are harder in general, you have to change classes and you must turn in all assignments on time. Following the many rules of middle school is harder than the simple rules of elementary. At school, quizzes and exams are taken very seriously, messing around and talking do not go without a consequence.
Most middle school will most likely have sports and other after school activities. Doing these activities is a good idea, because it will give you a chance to make new friends and compete