Section 657. Certain provisions relating to the guardianship and custody of children by persons who are not the parents of such children

(a)
  Notwithstanding  any  provision  of  the  law  to the contrary, a person
  possessing a lawful order of guardianship or custody of a  minor  child,
  who  is  not  the  parent of such child, may enroll such child in public
  school in the applicable school district where he or she and such  child
  reside.  Upon  application for enrollment of a minor child by a guardian
  or custodian who is not the parent of such child, a public school  shall
  enroll  such  child for such time as the child resides with the guardian
  or custodian in the applicable school district, upon  verification  that
  the  guardian  or  custodian  possess  a lawful order of guardianship or
  custody for such child and that the guardian or custodian and the  child
  properly reside in the same household within the school district.
    (b)  Notwithstanding  any  provision  of  law to the contrary, persons
  possessing a lawful order of custody of a child who are not a parent  of
  such  child shall have the same right to enroll and receive coverage for
  such child in their employer based health insurance plan and  to  assert
  the  same  legal rights under such employer based health insurance plans
  as persons who possess lawful orders of guardianship of the person for a
  child pursuant to rule twelve hundred ten of the civil practice laws and
  rules, article seventeen of the surrogate's court procedure act, or part
  4 of this article.