For elementary school students, art classes seek to foster interest as well as skill in many different forms of art. The art teacher usually has the freedom to design their own classes, but in general, classes will include basic drawing, painting and crafts. In middle school, classes continue to help students improve basic artistic skills, while introducing concepts in art history. At this level, lessons are still basic and intended to establish a solid foundation in skill and history. In high school, art classes expand to include other visual medium, such as video, photography and even graphic design. Art theory is also introduced at this level, and the subject becomes more of a serious academic study than an activity.