The WIDA Consortium (formerly World-Class Instructional Design and Assessment) is an educational consortium of state departments of education. Currently, 41 U.S. states and the District of Columbia, as well as Puerto Rico and the Northern Mariana Islands, participate in the WIDA Consortium. WIDA designs and implements proficiency standards and assessment for grade K-12 students who are English-language learners, as well as a set of proficiency standards and assessments for Spanish language learners. WIDA also provides professional development to educators and conducts research on instructional practices, as well as the results and use of the ACCESS and W-APT English language proficiency assessments.