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)