2014 New York Laws
PEN - Penal
Part 3 - SPECIFIC OFFENSES
Title P - OFFENSES AGAINST PUBLIC SAFETY
Article 265 - (265.00 - 265.45) FIREARMS AND OTHER DANGEROUS WEAPONS
265.01-A - Criminal possession of a weapon on school grounds.

265.01-a. Criminal possession of a weapon on school grounds.
A  person  is  guilty  of  criminal  possession  of a weapon on school
  grounds when he or she knowingly has in his or her possession  a  rifle,
  shotgun,  or  firearm  in  or  upon  a  building  or  grounds,  used for
  educational purposes, of any school, college, or university, except  the
  forestry  lands,  wherever  located,  owned  and maintained by the State
  University of New York college of environmental science and forestry, or
  upon a school bus as defined in section one  hundred  forty-two  of  the
  vehicle  and  traffic  law,  without  the  written authorization of such
  educational institution.
Criminal possession of a weapon on school grounds is a class E felony.