The study guide, intended for adults wishing to obtain a General Educational Development (GED) certificate in Illinois, discusses the U.S. Constitution, the Illinois Constitution, the Declaration of Independence, and rules for displaying the U.S. flag. The objective is to aid adults in passing the constitution component of the GED examination. Topics covered include the history and important topics of the Declaration of Independence; the history, concept definitions, and articles of the U.S. Constitution; the United States government system and its processes; amendments to the Constitution; the Illinois Constitution and state government procedures and responsibilities; local government powers; and rules for displaying the flag. Questions pinpointing major concepts are offered for each topic, followed by reading material and the answers to the questions, as well as definitions for important terms and concepts. (CK)