; and (ii) a mix of urban, suburban, and rural schools; and (B) may consider any other eligibility requirements that the Secretary and the Administrator determine are necessary to carry out the purposes of this Act. (c) Agreement To participate The Secretary and the Administrator shall seek to enter into a written agreement with each eligible school selected under subsection (b) to ensure that the eligible school desires to participate in the School Air Filters Demonstration Program. The Secretary and the Administrator shall carry out the activities under subsection (d) only with respect to participating eligible schools that enter into such an agreement. (d) Use of funds (1) In General The Secretary and the Administrator shall— (A) purchase commercial air filters for the buildings of each participating eligible school; (B) install a commercial air filter in every classroom, office, and common area that students access in each such school; (C) maintain those air filters for a period of 3 years, including by ensuring the replacement of the internal carbon filters of those air filters according to a frequency as indicated by the manufacturer; (D) provide technical support to eligible schools participating in the program, including training school staff on how to properly use the air filters; and (E) using not more than 3.5 percent of the funds appropriated under subsection (f), collect, analyze, and submit data that is necessary for the report and evaluation described in subsection (e). (2) Use of contractor (A) In General Subject to subparagraph (B), the activities described in subparagraphs (B) and (C) of paragraph (1) may be carried out by an entity that— (i) has a contract to do so with the Administrator