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.
intelligence test. mental test, mental testing, psychometric test, test - any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc; the test was standardized on a large sample of students.