; (2) to provide an incentive for qualified teachers to continue to utilize their enhanced skills in elementary schools and secondary schools serving rural communities; and (3) to increase the retention of highly skilled teachers in rural elementary schools and secondary schools. (b) Definitions In this section: (1) Eligible educators The term eligible educator means a teacher who teaches in a public elementary school or secondary school that is served by a local educational agency that is eligible to receive assistance under this part. (2) Eligible entities The term eligible entity means— (A) a State educational agency that is eligible to receive assistance under this part, in consortium with an institution of higher education; (B) a local educational agency that is eligible to receive assistance under this part, in consortium with an institution of higher education; or (C) an Indian tribe or organization, in consortium with a local educational agency that is eligible to receive assistance under this part and an institution of higher education. (3) Indian tribe The term Indian tribe has the meaning given the term in section 4 of the Indian Self-Determination and Education Assistance Act. (c) Program authorized The Secretary is authorized to award grants to eligible entities having applications approved under this section to enable such eligible entities to— (1) reimburse eligible educators for out-of-pocket costs associated with obtaining teacher certification or credentialing by the National Board for Professional Teaching Standards