N.Y. High. Law § 317

§ 317. Drug free school zone signs. Any political subdivision of the\nstate having jurisdiction over any highway within school grounds, as\ndefined in subdivision fourteen of section 220.00 of the penal law, may,\nupon the request of the appropriate school authority, place, cause to be\nplaced, or permit to be placed within the right of way of such highway\nsigns indicating a drug free school zone.\n