; (B) may reserve not more than— (i) 3 percent to provide technical assistance to, and support the capacity building of, the programs assisted under this section; and (ii) 0.5 percent to support program administration and data collection under this section; and (C) may reserve not more than 3.5 percent to award planning grants to eligible entities in order to assist those eligible entities in developing a program proposal in accordance with subsection (h). (3) Grant period The Secretary shall make grant awards for not more than 3 years and may extend grant awards for not more than 2 additional years if the grantee is making progress in achieving program objectives. (4) Geographic diversity In awarding grants under this section, the Secretary shall ensure that, to the extent practicable, grants are distributed among eligible entities that will serve geographically diverse areas, including urban and rural areas. (c) Application (1) In general An eligible entity desiring a grant under this section shall submit an application to the Secretary at such time, in such manner, and containing such information as the Secretary may require, including— (A) a description of how the eligible entity will implement the program proposal described in paragraph (2); (B) a description of how grant funds will be spent, including if and how other Federal, State, Tribal, and local funding sources may be used to supplement grant funds in order to meet the requirements of the teacher leadership program