; (III) workforce development and training, to support the maintenance, charging, and operations of electric school buses; and (IV) planning and technical activities to support the adoption and implementation of electric school buses; and (ii) to develop resources to inform, encourage, and support eligible entities in applying for and fulfilling the requirements of grants awarded under the program, including materials to support the workforce development and training described in clause (i)(III) and the planning and technical activities described in clause (i)(IV). (B) Requirements In order to receive a grant under the program, the Secretary shall— (i) require that grant recipients— (I) replace diesel school buses with electric school buses; (II) (aa) not later than 1 year after receiving the electric school bus purchased using a grant under the program, scrap the diesel engine of the school bus being replaced; or (bb) receive a waiver under paragraph (6); (III) do not, as a result of receiving the grant— (aa) lay off, transfer, or demote any current employee; or (bb) reduce the salary or benefits of any current employee or worsen the conditions of work of any current employee; and (IV) provide current employees with training to effectively operate, maintain, or otherwise adapt to new technologies relating to electric school buses; and (ii) permit grant recipients to receive and retain any funds or benefits received from— (I) scrapping a diesel engine; (II) transferring or repurposing a diesel school bus as authorized under a waiver under paragraph (6)