1. Short title This Act may be cited as the Strength in Diversity Act of 2023 . 2. Purpose The purpose of this Act is to support the development, implementation, and evaluation of comprehensive strategies to address the effects of racial isolation or concentrated poverty by increasing diversity, including racial diversity and socioeconomic diversity, in covered schools. 3. Reservation for national and State activities (a) National activities The Secretary may reserve not more than 5 percent of the amounts made available under section 9 for a fiscal year to carry out activities of national significance relating to this Act, which may include— (1) research, development, data collection, monitoring, technical assistance, evaluation, or dissemination activities; and (2) the development and maintenance of best practices for recipients of grants under section 4 and other experts in the field of school diversity. (b) State activities The Secretary may reserve not more than 10 percent of the amounts made available under section 9 for a fiscal year for planning grants and implementation grants made to State educational agencies under section 4. 4. Grant program authorized (a) Authorization (1) In general From the amounts made available under section 9 and not reserved under section 3 for a fiscal year, the Secretary shall award grants in accordance with subsection (b) to eligible entities to develop or implement plans to improve diversity and reduce or eliminate racial or socioeconomic isolation in covered schools. (2) Types of grants The Secretary may, in any fiscal year, award— (A) planning grants to carry out the activities described in section 6(a); (B) implementation grants to carry out the activities described in section 6(b); or (C) both such planning grants and implementation grants. (b) Award basis (1) Criteria for evaluating applications The Secretary shall award grants under this section on a competitive basis, based on— (A) the quality of the application submitted by an eligible entity under section 5