“…Regarding the preservation of indigenous language and culture in a multicultural environment where there exists a national dominant language(s), mother tongue-based multilingual education has been increasingly considered the most optimal approach for ethnic minority people to master their mother tongues, and national and international languages (UNESCO Bangkok, 2015a;Jacob, 2016;Wisbey, 2013). Indigenous education has been conducted and studied in most multicultural situations, especially in multi-ethnic nations, such as the United States, China, Mexico, Uganda, and New Zealand (Boshier, 2015;Jacob, Liu, & Lee, 2015;O'Dowd, 2015;Ward & Braudt, 2015).…”