"Title III" of the "Elementary and Secondary Education Act" ("ESEA") provides formula grants to states to help support the educational needs of students identified as English learners (ELs). In school year (SY) 2011-12, ELs served by "Title III"-funded activities comprised approximately 9 percent of the students in the United States. As our schools become more linguistically diverse, we must strive to ensure that these students have the knowledge and skills to succeed. The extent to which ELs graduate from high school with the skills and knowledge they need for college and careers affects America's long-term prosperity. This is the fifth biennial report to Congress on the implementation of the "Elementary and Secondary Education Act's" Title III State Formula Grant Program (also known as the English Language Acquisition State Grants Program). In this report, the U.S. Department of Education presents data reported by the 50 states, the District of Columbia, and the Commonwealth of Puerto Rico related to the education of EL students for SYs 2010-11 and 2011-12. States submit these data through their annual Consolidated State Performance Report (CSPR). The data may differ from state to state because states use different assessments, procedures, and criteria to determine English language proficiency, eligibility for EL services, and exiting EL programs. Therefore, caution should be exercised when interpreting these data. Year-to-year comparisons of percentages have been calculated and presented as differences in percentage points. Year-to-year comparisons of raw numbers have been calculated and presented either as percentage change over time or as a simple difference in numbers. This report is for members of Congress and is also available for public use. This report provides a list of abbreviations and definitions. The following appendices are included: (1) Detailed Data Tables; and (2) Profiles of States, the District of Columbia, and the Commonwealth of Puerto Rico. [For the fourth biennial report, see ED564278.]