This seminal handbook provides a comprehensive overview of the research on world language education and how that research can transform into effective and daily instructional practices for K-16 language teachers.With contributions from leading scholars in the field, the volume addresses cutting-edge research, trends, and practice. Covering key topics in language education, the volume is organized in six sections: Teaching Methods and Approaches; Culture, Pragmatics, and Intercultural Communicative Competence; Assessment and Program Evaluation; Diversity, Equity, and Inclusion in the World Language Classroom; Technology Integration and Online Language Teaching and Learning; and Key Issues in World Language Instruction, including advocacy, teacher recruitment and retention, and professional development.This handbook is an essential text for all scholars, researchers, and educators in world languages.