In 2016, 20 states administered the ACT exam to all high school students. Of those 20 states, three use the ACT in their statewide testing program as an assessment for accountability at the high school level. States using the tests as part of an accountability system are required to submit results from an independent alignment study to the U.S. Department of Education for the federal peer review process. Achieve conducted an independent analysis of the alignment of the ACT plus Writing with the Common Core State Standards (CCSS). This study examines four ACT subtests -- English, Reading, Writing, and Mathematics.