• BESO was established in 1979 by Dr. Ellen Clark at the University of Texas at Austin
  • Moved to University of Texas at San Antonio in the early 1980s
  • BESO began working through the Texas Association of Bilingual Education
  • 2013 BESO established its first National SIG at the National Association of Bilingual Education by Dr. Margarita Machado-Casas and Dr. Belinda Schouten
  • 2016 BESO GLOBE extended the organization beyond UG to the Graduate level (MA and PhD)
  • 2017 first group of BESITOS (HS BESO Students)