Feedback from years of nationwide use has resulted in a 3rd Edition of this unique, systematic, and objective guide to considering and implementing academic acceleration. Developed and tested by the Belin-Blank Center at the University of Iowa, the IAS ensures that acceleration decisions are systematic, thoughtful, well reasoned, and defensible. The IAS continues to be used in all 50 states, Australia, and Canada. Featured in the 3rd Edition are: (1) Overall refined material based on experience and research; (2) Revised list of required ability and aptitude tests; (3) Revised test list includes CogAT; (4) Clearer format to make it easier to use; (5) Clarification of item scores; and (6) Updated research on acceleration.