Today, at Window Rock Unified School District in Fort Defiance, Arizona, Tséhootsooí Diné Bi'ólta', also known as the Diné Language Immersion Medium School serves approximately 240 students from K-8. The school has thirteen Diné language teachers instruct only in the Diné language while five English language teachers instruct in the English language, allowing for the use of the Diné Language if necessary.

At all grade levels instruction is based upon the integration of the Navajo Nation's Diné Cultural content standards with the Arizona state academic standards in reading, writing, math, and foreign language. This relates to the district's vision of being "an exemplary student centered learning organization reflecting the Diné values of life-long learning."

At Kindergarten and 1st Grade, the language instruction is only in Navajo. Beginning at 2nd Grade, English language instruction is provided for 10% of the school day. An additional 10% per grade level of English language instruction is added from grades 3-6. At 6th Grade 50% of the school day is conducted in the Diné language and 50% of the school day is in English. Students at 7th Grade begin elective coursework while continuing Diné language instruction at 50%.

Our Mission ,Vission and Goal:
We exist to ensure relevant learning for all students to be successful in a multicultural society.We will be an exemplary student centered organization, reflecting the Diné values of life-long learning.To revitalize and maintain the Diné language among school age children within the communities the WRUSD #8 serves.