; and (B) the likelihood, as determined by the Secretary, that the eligible entity will use the grant to improve student outcomes or outcomes on other performance measures described in section 52507. (2) Priority In awarding grants under this section, the Secretary shall give priority to the following eligible entities: (A) First, to an eligible entity that proposes, in an application submitted under section 52505, to use the grant to support a program that addresses racial isolation. (B) Second, to an eligible entity that proposes, in an application submitted under section 52505, to use the grant to support a program that extends beyond one local educational agency, such as an inter-district or regional program. (c) Duration of grants (1) Planning grant A planning grant awarded under this section shall be for a period of not more than 1 year. (2) Implementation grant An implementation grant awarded under this section shall be for a period of not more than 3 years, except that the Secretary may extend an implementation grant for an additional 2-year period if the eligible entity receiving the grant demonstrates to the Secretary that the eligible entity is making significant progress, as determined by the Secretary, on the program performance measures described in section 52507. 52505. Applications In order to receive a grant under section 52504, an eligible entity shall submit an application to the Secretary at such time, in such manner, and containing such information as the Secretary may require, including— (1) a description of the program for which the eligible entity is seeking a grant, including— (A) how the eligible entity proposes to use the grant to improve the academic and life outcomes of students in racial or socioeconomic isolation in covered schools by supporting interventions that increase diversity in such covered schools; (B) in the case of an implementation grant, the implementation grant plan described in section 52506(b)(1)