Appeal from a judgment of the Supreme Court (Con-nor, J.), entered January 6, 2006 in Albany County, which granted petitioners’ application, in a proceeding pursuant to CPLR article 78, to annul a determination of respondent Commissioner of Education denying enrollment of petitioners’ children in the Westhill Central School District.
Petitioners assert that their property is located in two different school districts, permitting them to designate which school district their children will attend (see Education Law § 3203). A subdivision map filed in the 1960s showed petitioners’ property line along the line between the Town of Onondaga and City of Syracuse, Onondaga County, which is also the line separating the Westhill Central School District (hereinafter the district) from the Syracuse City School District. Petitioners commissioned surveys of their property and their southerly neighbors’ property, which show that petitioners’ property extends 4.5 inches into the Town and, thus, into the district. A boundary line agreement executed and filed by petitioners and their neighbors sets forth the metes and bounds description showing that a small strip of petitioners’ property is in the district.
After the district determined, contrary to petitioners’ designation, that petitioners did not reside in the district and their children were therefore not eligible for enrollment, petitioners filed an administrative appeal with respondent Commissioner of Education. The Commissioner upheld the district’s determination. Petitioners then commenced this CPLR article 78 proceeding against the Commissioner and respondent Department of Education seeking to annul the Commissioner’s determination and to require the district to accept petitioners’ designation of the district for their children’s enrollment pursuant to Education Law § 3203. The district was not made a party to the proceeding. Supreme Court (Connor, J.) granted the petition and annulled the Commissioner’s determination.
When this matter was previously before us, we reversed a judgment of Supreme Court (Ferradino, J.) which denied the district’s motion to intervene in petitioners’ CPLR article 78 proceeding (39 AD3d 916 [2007]). We permitted the district to intervene for purposes of appealing the January 6, 2006 judgment, granted the motion of the Commissioner and Department of Education to withdraw their appeal and withheld decision. After receiving briefs from the district and petitioners, we now address the main appeal.
Because the district was a necessary party subject to Supreme Court’s jurisdiction, the court was required to order petitioners to summon the district {see CPLR 1001 [b]). We now correct the error by joining the district as a respondent and ordering petitioners to serve the district with the initiatory papers. The district may respond and raise any defenses it may have. After the district files its responding papers, the trial court will then be able to consider this proceeding with the benefit of participation by all necessary parties.
Crew III, J.P., Mugglin, Rose and Lahtinen, JJ., concur. Ordered that the judgment is reversed, on the law, without costs, Westhill Central School District is joined as a respondent, petitioners are ordered to serve the notice of petition and petition within 20 days of the date of this Court’s decision, and matter remitted to the Supreme Court for further proceedings not inconsistent with this Court’s decision.