Texas Education Agency. Division of Research and Analysis. Secondary School Completion and Dropouts in Texas Public Schools: 2010-2011, District Supplement, report, October 2012; (https://texashistory.unt.edu/ark:/67531/metapth653655/m1/3/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .