ยง 2-b. Use of student social security numbers restricted. No public or
  private  elementary or secondary school or college as defined in section
  two of this article shall display any student's social  security  number
  to  identify  such  student  for posting or public listing of grades, on
  class  rosters  or  other  lists  provided  to  teachers,   on   student
  identification  cards,  in  student directories or similar listings, or,
  unless specifically authorized  or  required  by  law,  for  any  public
  identification purpose.
Structure New York Laws