Kathy Escamilla is one of America's foundational voices in multilingual education. A professor emerita at the University of Colorado Boulder, she helped define the concept of the Bilingual Continuum, reshaping how educators understand language development in multilingual learners. She is best known for her work across the field of biliteracy development. In her decades-long career she has deeply influenced how schools nationwide approach both instruction and assessment, and has pushed the field into asset-based practices that build on students' full linguistic repertoires.