Notwithstanding AS 14.20.020(b), a person may be issued a limited certificate, valid only in the area of expertise for which it is issued, to teach Alaska Native language or culture, military science, or a vocational or technical course for which the board determines by regulation that baccalaureate degree training is not sufficiently available. A limited certificate may be issued under this section only if the school board of the district or regional educational attendance area in which the person will be teaching has requested its issuance. A person who applies for a limited certificate shall demonstrate, as required by regulations adopted by the board, instructional skills and subject matter expertise sufficient to ensure the public that the person is competent as a teacher. The board may require a person issued a limited certificate to undertake academic training as may be required by the board by regulation and make satisfactory progress in the academic training.