The conclusion of the 2010-11 school year will mark nine plus years since enactment of the No Child Left Behind Act of 2001 (NCLB). Throughout this period, numerous states--sometimes almost every one--have annually sought to amend the educational accountability systems they first developed as "workbooks" in 2002-03, consistent with the law's requirements and goals to improve teaching and student achievement. In this paper, covering the 2008-09 and 2009-10 school years, the number of states continuing to submit amendment requests and the number of substantive amendments proposed remains surprising so long after NCLB's enactment. The highest number of states (49 and the District of Columbia) and greatest number of proposed amendments (over 275) occurred in 2008. In 2009, at least 36 states and the District of Columbia submitted approximately 90 substantive requests, and at least 31 states, the District of Columbia, and Puerto Rico submitted approximately 95 substantive, proposed amendments in 2010. Appended are: (1) List of acronyms used in this paper; (2) Timeline of significant events related to the implementation of NCLB since its enactment in January 2002; (3) Selected information related to waiver provisions under sec. 9401 of the law; and (4) Table of substantive changes in ED policy with respect to decisions regarding states' amendment requests since 2002. References and other resource materials are included. (Contains 25 footnotes.)