may use not more than 50 percent of the grant funds for the costs associated with the installation of play and recreation amenities. In the installation of play and recreation amenities, an eligible entity shall place an emphasis on amenities made of non-petroleum-based, natural materials. (d) Authorization of appropriations There are authorized to be appropriated to carry out this section $25,000,000 for each of fiscal years 2024 through 2028. 5. Living schoolyard projects (a) Planning grants (1) In general The Secretary shall award planning grants to eligible entities to enable the eligible entities to develop master plans, including design and construction documents, to turn some or all of the outdoor spaces of the public elementary schools and secondary schools served by the eligible entities into living schoolyards. (2) Applications An eligible entity that desires to receive a grant under this subsection shall submit an application to the Secretary at such time, in such manner, and accompanied by such information as the Secretary may require, including the following: (A) An outline for, that includes the scope of, the master plan described in paragraph (3). (B) A plan for educator professional development in order to support educators in utilizing the living schoolyard. (C) Identification of State learning standards that may be addressed through student involvement in the living schoolyard. (D) A plan for how the eligible entity will provide for maintenance and operation of the living schoolyard after the grant period ends. (3) Master plan (A) In general An eligible entity that receives a grant under this subsection shall use the grant funds to develop a master plan, including design and construction documents, to turn some or all of the outdoor spaces of the public elementary schools and secondary schools served by the eligible entity into living schoolyards. Such master plan shall— (i) be developed with community input, including students, families, educators, and school staff