Spees, Lisa P., Stephanie Potochnick, and Krista M. Perreira. “The Academic Achievement of Limited English Proficient (LEP) Youth in New and Established Immigrant States: Lessons from the National Assessment of Educational Progress (NAEP)”. Education Policy Analysis Archives 24 (October 3, 2016): 99. Accessed June 28, 2022. https://epaa.asu.edu/index.php/epaa/article/view/2130.