N.J. Stat. Ann. § 18A:38-7.12

Persons of school age who reside in a multi-district federal enclave shall be deemed to be domiciled in a single district to be designated by the county superintendent of schools. Where all persons of school age who reside in a multi-district federal enclave already attend a single district, the county superintendent shall designate that district as the district to be attended by all current and future pupils residing in the multi-district federal enclave. Any person attending on the effective date of this act a school in a district other than a district designated by the county superintendent pursuant to this act shall be permitted to continue in such school until graduation.