My daughter (a 9th grader) is studying for the A.P. U.S. Government & Politics test using the Wilson textbook (12th ed.) We don't have a syllabus, but we ordered the study guide from Amazon:
http://www.amazon.com/American-Government-James-Q-Wilson/dp/061856246X
The study guide has key terms, multiple choice questions, true/false questions, essay prompts, etc. It is helpful in assigning grades. My daughter has been reading through the textbook, taking notes, and completing questions in the study guide when she finishes each chapter.
Since we didn't make a syllabus and get it approved by the College Board, we won't be able to note this course as an official AP course on her transcript, but we plan on designating it as an honors American government course, with her AP score on the transcript as well.