Iowa Code § 259A.1
The department of education shall cause to be made available for qualified individuals a high school equivalency diploma. The diploma shall be issued on the basis of satisfactory competence as shown by tests covering all of the following: reading, language arts, literacy, mathematics, science, and social studies.
[C66, 71, 73, 75, 77, 79, 81, §259A.1] 2006 Acts, ch 1152, §29; 2013 Acts, ch 88, §9