The Iowa Tests of Basic Skills (ITBS) offer educators a diagnostic look at how their students are progressing in key academic areas. The ITBS tests are designed for kindergarten through 8th grade students and include nine themes: vocabulary, word analysis, listening, reading comprehension, language, math, social studies, science, and sources of information. Each test takes 30 minutes or less to administer. The tests vary in length from 4 to 59 items. The link below provides information on the Iowa Tests of Basic Skills, as well as how to purchase the tests and supporting materials. Authors