This edited volume examines the Seal of Biliteracy (SoBL), a relatively new policy initiative that has received little attention in scholarly and practical literature. The contributions seek to expand the literature by presenting case studies of policy implementation in diverse contexts across the United States. Members of various professional organizations will benefit from this text, including the National Association for Bilingual Education (NABE), Teachers of English to Speakers of Other Languages (TESOL), the American Council for Teaching of Foreign Languages (ACTFL), as well as participants in local affiliates for bilingual, English as a second language (ESL), and world language education.