<a href="http://lifeinisrael.blogspot.com/2013/02/the-halacha-of-firecrackers-and.html">http://lifeinisrael.blogspot.com/2013/02/the-halacha-of-firecrackers-and.html</a><div><br></div><div>i think every school across all denominational lines  sends out warnings  that  kids  will be  expelled  for  use  of  products near/on  school  grounds  etc.  i don't  recall them  emphasizing  that an issur  tora  is involved </div>