The "Carl D. Perkins Career and Technical Education Act of 2006" ("Perkins IV") requires states to report to the Department of Education each year on their progress in achieving their adjusted performance levels--negotiated with and approved by the Department--on the core indicators of performance (core indicators) described in Sec. 113(b)(2)(A) and (B) of "Perkins IV." This report is the Department's third annual report to Congress under "Perkins IV." It presents data that states submitted to the Department for program year (PY) 2009-10. For PY 2009-10, each state, operating under the second year of its five-year plan pursuant to Sec. 122(a)(1) of Perkins IV, was also required by the secretary to report the following: (1) Enrollment data for career and technical education (CTE) participants in CTE programs; (2) Enrollment data for CTE students in CTE programs; (3) Enrollment data for CTE participants in tech prep programs funded under Title II of "Perkins IV"; and (4) Performance data for CTE concentrators on the "Perkins IV" Sec. 113(b)(2)(A) and (B) core indicators. This report to Congress contains four sections. The introduction section describes the "Perkins IV" accountability requirements and describes efforts by the Department to help states establish valid and reliable measures, and rigorous performance levels for the "Perkins IV" Sec. 113(b) core indicators. The state performance data section discusses states' progress in meeting their performance levels for the required "Perkins IV" Sec. 113(b) core indicators for PY 2009-10. The data quality section discusses issues pertaining to the validity, quality, and comparability of states' "Perkins IV" performance data. The final section offers conclusions regarding the implementation of CTE under "Perkins IV." Individual state data profiles are provided in Appendix E of this report. [For the 2008-09 report, see ED610104.]