The National Assessment of Adult Literacy measured three types of literacy: prose, the ability to read and understand information presented in sentences and paragraphs; document, understanding and using other printed material such as bus schedules and prescription labels; and quantitative, using and understanding numeric information presented in texts or documents, such as interpreting information in a graph. Gains were made by black adults on every type of task tested and by adults overall in basic-level computational tasks. However, Hispanics declined on all levels. The study represents a population of 222 million adults age 16 and older and is based on a sample of 19,000 adults tested in their homes, college housing, or prisons.
In response to a request from the National Center for Education Statistics for assistance in setting performance standards for the National Assessment of Adult Literacy, the National Research Council report Measuring Literacy: Performance Levels for Adults recommended that the results be reported using five levels – nonliterate in English, below basic, basic, intermediate, and advanced. The report also discusses the committee’s recommendations for future literacy assessments.