This report presents selected data on adults' participation in educational activities in the United States, excluding full-time only enrollments in college/university or vocational/technical credential programs, over a 12-month period from 2004-05. Historically, full-time only participation in postsecondary (college and vocational) programs has not been considered adult education. For this reason, and for comparability with previous reports of adult education based upon NHES surveys, full-time only enrollments are not included in the estimates for participation in college/university and/or vocational/technical credential programs or in the overall estimate of adult education participation. These data are from the Adult Education Survey of the 2005 National Household Education Surveys Program (AE-NHES:2005). Interviews were conducted with a nationally representative sample of the civilian, non-institutionalized population age 16 or older who were not enrolled in grade 12 or below. Data were collected from early January through April 2005. A total of 8,904 telephone interviews were completed with adults representing a weighted total of 211,607,007. The weighted overall unit response rate was 47.6 percent (the product of the Screener unit response rate [66.9%] and the Adult Education unit response rate [71.2%]) and item nonresponse rates for most of the variables were 3 percent or lower. Additional details about the survey, response rates, and other technical issues are provided in Appendix A.