The Texas Education Agency (TEA) prepares an annual report on graduates and dropouts in Texas public secondary schools. This report includes state summaries of the annual dropout rate, longitudinal graduation and dropout rates, and state attrition rates. In addition to statewide statistics, the report provides historical information about dropout policy in Texas and the evolution of the dropout definition used for accountability purposes. Common methods of measuring student progress through school are discussed, along with advantages and disadvantages associated with each measure. Extensive background information on TEA data collection, processing, and reporting is presented, and national requirements for dropout data are described. [For the 2013-14 report, see ED612563.]