She is currently a co-investigator of a federally funded research project exploring writing instruction and outcomes among English language learners, and has served as Principal Investigator of several large-scale studies of biliteracy development and dual language education. Her books include Realizing the vision of two-way immersion: Fostering effective programs and classrooms and Preparing classroom teachers to succeed with second language learners. Previously, she has worked as a senior research associate at the Center for Applied Linguistics and as a bilingual teacher in California and Costa Rica.