Resources for Two-Way Immersion and Dual Language Practitioners

CAL is working to expand our offerings and information related to Bilingual and Dual Language Education, including Two-Way Immersion. Watch our website for updates.

In dual language education programs, students are taught literacy and academic content in English and a partner language. The goals of dual language are for students to develop high levels of language proficiency and literacy in both program languages, to demonstrate high levels of academic achievement, and to develop an appreciation for and an understanding of diverse cultures.

Two-way immersion (TWI) is a distinctive form of dual language education in which balanced numbers of native English speakers and native speakers of the partner language are integrated for instruction so that both groups of students serve in the role of language model and language learner at different times.

The structure of TWI programs varies, but they all provide at least 50% of instruction in the partner language at all grade levels beginning in pre-K, Kindergarten, or first grade and running at least five years (preferably through Grade 12).


Glossary of Terms Related to Dual Language and TWI in the United States

Confused about all the terminology related to two-way immersion and dual language? Our glossary is here to help!

TWI Bulletin Logo
Read past issues of the TWI Bulletin.

Learn More About TWI

Two-Way Immersion: The Basics/Conceptos Básicos Sobre la Educación Bilingüe de Inmersión Recíproca

Flyer in English

Folleto en español


Two-Way Immersion 101/La Educación Bilingüe de Inmersión Recíproca

Report in English

Informe en español


Frequently Asked Questions about TWI

Featured Resources

Guiding Principles

Guiding Principles for Dual Language Education – Third Edition


Publication Cover

Realizing the Vision
of Two-Way Immersion: Fostering Effective Programs and Classrooms


Literature Review

Read "Trends in Two-Way Immersion Education: A Review of the Research."


Program Planner

Order "Dual Language Program Planner: A Guide for Designing and Implementing Dual Language Programs" from the CAL Store.