Adult education programs serve learners who are native English speakers and those whose first, or native, language is not English. Native English speakers attend adult basic education (ABE) classes to learn the skills needed to earn high school equivalency certificates or to achieve other goals related to job, family, or further education. English language learners attend English as a second language (ESL) or ABE classes to improve their oral and written skills in English and to achieve goals similar to those of native English speakers.