In response to an unknown trigger, the immune system may begin producing antibodies that instead of fighting infections, attack the body's own tissues. Treatment for autoimmune diseases generally focuses on reducing immune system activity.
What's taught in school. Some of the items in standardized achievement tests measure the knowledge or skills that students learn in school. In certain subject areas, such as mathematics, children learn in school most of what they know about a subject.
List of standardized tests in the United States. From Wikipedia, the free encyclopedia. A standardized test is a test administered and scored in a standard manner. The following are such tests as administered across the United States.