In this subtitle, “adult education” means academic instruction and education services below the postsecondary level for individuals:
(1) who are at least 16 years old;
(2) who are not enrolled or required to be enrolled in high school under State law; and
(3) who:
(i) are basic skills deficient;
(ii) do not have a high school diploma or its recognized equivalent and have not achieved an equivalent level of education; or
(iii) are English language learners.