(a) Memoranda of law, consisting of the parties' arguments of law may be submitted by any party to an appeal, and may be requested by the commissioner's counsel or by the commissioner. The petitioner shall serve a copy of any memorandum of law upon every other party to the appeal in the manner provided by section 275.8(b) of this Title and, except in the case of a charter school location/co-location appeal pursuant to section 276.11 of this Part, shall file such memorandum of law, with proof of service thereof in accordance with section 275.9 of this Title, within 20 days after service of the answer or 10 days after service of the reply, whichever is later. Each respondent shall serve a copy of any memorandum of law, upon every other party in the manner provided by section 275.8(b) of this Title and, except in the case of a charter school location/co-location appeal pursuant to section 276.11 of this Part, shall file such memorandum of law with proof of service thereof in accordance with section 275.9 of this Title, within 30 days after service of the answer or 20 days after service of the reply, whichever is later. Where the answer is served upon petitioner or petitioner's counsel by mail, the date of mailing and the four days subsequent thereto shall be excluded in the computation of the 20-day period in which petitioner's memorandum of law must be served and filed. Except in the case of a charter school location/co-location appeal pursuant to section 276.11 of this Part, reply memoranda will be accepted only with the prior approval of the commissioner. The commissioner, in his/her sole discretion, may permit the late filing of memoranda of law upon written application by a party, setting forth good cause for the delay and demonstrating the necessity of such memoranda to a determination of the appeal, together with proof of service of a copy of such application upon all other parties to the appeal. In a charter school location/co-location appeal pursuant to section 276.11 of this Part, memoranda of law shall be served and filed in the manner prescribed in such section 276.11 of this Part.

(b) Notwithstanding the provisions of subdivision (a) of this section, in an appeal regarding a homeless child's or youth's access to a free, appropriate public education pursuant to section 100.2(x) of this Title, memoranda of law may be served in the manner provided by either section 275.8(b) or (e) of this Title.