Commodity only schools shall also be eligible for special assistance payments under this section. Such schools shall serve meals free to children who meet the eligibility requirements for free meals under section
1758
(b) of this title, and shall serve meals at a reduced price, not exceeding the price specified in section
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(b)(9) of this title, to children meeting the eligibility requirements for reduced price meals under such section. No physical segregation of, or other discrimination against, any child eligible for a free or reduced-priced lunch shall be made by the school, nor shall there be any overt identification of any such child by any means.