“…Palabras clave: estudiantes de inglés; percepciones de los directores; liderazgo escolar; programas de segundo idioma His study presented here examines 22 elementary school principals' knowledge of the bilingual/second language programs that are implemented at their schools that are located in a metropolitan school district located in the south central region of the United States and serves many English Language Learners (ELLs). As the number of ELLs continues to increase in many regions of the US, elementary school educators are faced with the critical challenge of providing them an appropriate education (Madsen & Mabokela, 2014;Timberlake, Howell, & Staight, 2011). While teachers must provide effective instruction for ELLs so that they are successful in learning English and academic content (Short & Fitzsimmons, 2007), principals must also have the critical knowledge needed to support teachers in working with ELLs (Darling-Hammond, 2010;Graczewski, Knudson, & Holtzman, 2009).…”