Since Achieve launched the American Diploma Project (ADP) Network at the National Education Summit on High Schools in February 2005, state leaders across the country have been hard at work aligning their standards, graduation requirements, assessments and accountability systems with the expectations of colleges and employers. To monitor state progress in adopting the college and career readiness agenda, Achieve conducts an annual survey of all 50 states and the District of Columbia on the key college- and career-ready policies that form the basis for the ADP Network. K-12 education chiefs from all 50 states and the District of Columbia responded to this year's survey. "Closing the Expectations Gap, 2010" is the fifth annual report in this series. The report details state progress implementing the American Diploma Project policy agenda. It looks at the number of states that have raised standards and adjusted their graduation requirements, P-20 data systems, assessments and accountability systems to support the college- and career-ready agenda. Appendices include: (1) Achieve Resources; (2) Overview of the ADP Assessment Consortium and Use of ADP Algebra II Exam; and (3) Methodology. (Contains 13 endnotes.) [For the 2009 report, see ED507052.]