Iowa Tests of Basic Skills

The Iowa Tests of Basic Skills, often known simply as the Iowa Tests, are a standardized test administered by the University of Iowa and used across the United States. It tests K–12 students on various subjects, such as mathematics and the language arts. Each test subject is scored with a percentile score, comparing him or her to the overall national results, and a grade equivalent, indicating the student's progress within a hypothetical 15-year academic curriculum.

When the Iowa Tests are taken along with the Cognitive Abilities Test, the test report additionally compares the student's results to his or her predicted scores.

The Iowa Tests were first administered in 1935 as the Iowa Every Pupil Tests.