Park focuses on early childhood policies affecting children of immigrants and dual-language learners from birth to age eight in the U.S. and internationally. (The center is part of the Migration Policy Institute.) She also supports a national project coordinating grassroots organizations seeking to expand access to affordable, high-quality child care. Previously, Park worked as director of outreach and was a program manager at WorldTeach, which is dedicated to international development and education, and is based at Harvard's Center for International Development.