To teach Native language in Alaska, a Limited Type M Certificate ➚ is generally required. Applicants provide documentation of four years experience in Alaska Native language or culture, approved by a school district. Alternatively, individuals can complete a university or college certificate or degree such as the Native Language Education Certificate. ➚

In Arizona teachers can obtain the Native American Language PreK-12 Certificate. ➚ A letter verifying proficiency in the Native language from appropriate tribal entity is required.

To teach Native languages in Kansas, individuals often use a Restricted Teaching License ➚ which allows Native language speakers to teach without a traditional education degree. Candidates must verify proficiency, often through Tribal support.

The department may enter into a memorandum of understanding with a federally recognized Native American tribe, the board of a school district, or the board of directors of a public school academy that authorizes the superintendent of public instruction to issue a 3-year letter of approval or continuing approval to allow the Native American tribe, school district, or public school academy to use teachers who do not possess a valid Michigan teaching certificate to teach a Native American tribal language and culture class. A memorandum of understanding entered into under this section shall require that a noncertificated teacher has demonstrated mastery of the tribal language either through a credential issued by a federally recognized Native American tribe or another means considered suitable by the department. The memorandum of agreement shall include requirements for renewal or continuing approval of the noncertificated teacher as established by the Native American tribe, the board of the school district, or the board of directors of the public school academy in collaboration with the department.

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To teach Native languages in Montana, a Montana Class 7 American Indian Language and Culture Specialist Licensure ➚  is required. Verification by the authorized representative of a tribal government that an applicant has met the tribal standards for competency and fluency is a requisite for applying for Class 7 certification.

To teach Native languages in New Mexico, instructors need a 520 Native American Language & Culture (NALC) certification ➚, which requires Tribal proficiency certification but no degree; or a standard teaching license with a bilingual endorsement. Applicants for the 520 NALC certification mush have their proficiency in the tribal language and culture confirmed by their specific tribe, not a college degree.

To teach Native languages in North Dakota individuals can obtain a Native American Language/Culture License. ➚ The North Dakota Standards and Practices Board may license an individual as an instructor of North Dakota American Indian languages and culture if the individual is recommended for licensure to teach North Dakota Native language by an Indigenous language board created by a Tribal government in this state and if the individual:

• Displays competence in North Dakota American Indian languages and culture and has successfully completed a three-semester hour course in classroom instruction at a tribal college or other institution of higher education; or
• Holds a baccalaureate degree and has knowledge of and experience in North Dakota American Indian languages and culture.

In Oklahoma, provisional certification to teach a Native American language is issued by the state after a prospective teacher receives a certificate from an Indigenous Nation. The certification is initially valid for one year. How to get a provisional certificate:

Obtain tribal certification. You must be granted a teaching certificate from an Indigenous Nation that has a language program.
Apply for state provisional certification. After receiving the tribal certificate, the state of Oklahoma will issue a one-year provisional certification to allow you to teach in public schools.
Certification renewal

Without an Oklahoma teaching credential: If you do not have a separate Oklahoma traditional or alternative teaching credential, your Native American language certification must be renewed annually. This requires completing additional professional development hours.
With an Oklahoma teaching credential: If you hold a traditional or alternative teaching credential from Oklahoma, you only need to renew your Native American language certification every five years.

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To teach Native languages in South Dakota individuals can obtain a 5-year renewable Native American Language and Culture Permit without a standard teaching degree. Requirements include an oral/written proficiency, a 3-hour methodology course, and recommendation from a tribal language board or recognized institution. 

https://sdlegislature.gov/Rules/Administrative/24:28:09:05 
https://doe.sd.gov/certification/documents/SOF2.pdf 

To teach Native languages in Wisconsin, individuals can obtain an American Indian Language License. ➚ Applicants must demonstrate they are certified to be competent in the associated American Indian language. The certification under this paragraph shall be made by one of the following entities, as determined by the associated Tribal government:
1. The Tribal council.
2. The Tribal language division.
3. The local American Indian parent advisory committee.