Adult education programs serve people 16 and older who have not finished high school. Individuals of limited English proficiency (LEP) generally participate in English-as-a-Second-Language (ESL) programs before enrolling in the regular adult education program. Federal law defines LEP students as having a native language or home or community language other than English. ESL teachers are most likely to be females working part time. Some have no training in teaching adults nor in teaching a second language. In some states, instruction is by trained volunteers. Instruction may be offered in the native language or English at several proficiency levels. A variety of instructional approaches are used. Language skills are taught most commonly, but other related skills may be taught. Instruction takes place in a variety of settings, but most often in public schools and community colleges. Most programs for adults are supported by federal, state, and local funds. The number of LEP adults served by ESL programs is increasing, and the trend is likely to continue. State concerns include the following: adequately trained staff, curriculum development, and appropriate student assessment. (MSE)