; or (C) expansion grants to fund implementation and a rigorous replication evaluation of a practice, program, or intervention that has been found to produce sizable, important impacts under a mid-phase grant described in subparagraph (B) or another effort meeting similar criteria, for the purposes of— (i) determining whether such impacts can be successfully reproduced and sustained over time; and (ii) identifying the conditions in which the practice, program, or initiative is most effective. (d) Application (1) In general An eligible entity desiring a grant under this section shall submit to the Secretary an application at such time, in such manner, and containing such information as the Secretary may require. (2) Contents An application submitted under paragraph (1) shall include— (A) a description of the high-need students that the eligible entity is proposing to serve through the grant; and (B) a description of the outcome measures, including explicit outcome measures for high-need students, that the eligible entity will use, in addition to the outcome measures described in subsection (f)(2)(A), to evaluate the success of the grant. (e) Priority In awarding grants under this section, the Secretary shall give priority to eligible entities that— (1) propose to serve the largest number of high-need students; or (2) serve a high proportion of students from one or more school districts with a school district locale code of 31, 32, 33, 41, 42, or 43, as determined by the Secretary using the school district locale codes in effect on December 1, 2019. (f) Evaluations Each recipient of a grant under this section shall conduct, and submit to the Secretary, a rigorous, independent evaluation of— (1) the effectiveness of the practice, program, or intervention carried out under such grant