The Center for Applied Linguistics (CAL) carries out a wide range of activities including research, teacher education, analysis and dissemination of information, design and development of policies and resources for DI education.
Perhaps the most important document to guide the development of a DI program is the “Guiding Principles for Dual Language Education,” which is available through the CAL in Washington, DC. Synthesizing all the research on dual language programs, it provides a reflection rubric that can be used to guide the program development for new programs and to support the strengthening of existing programs.
CAL also has a “Two-Way Immersion Toolkit” for districts and sites that are considering implementing a DI education program:
There are many other resources available on the CAL website for DI programs.
There is also a national two-way immersion directory available. It is a self-reporting website, which means that the directory is not exhaustive: http://www.cal.org/twi/directory