(5) Possession of one ounce or less of psilocybin is a disorderly persons offense.
Any person who commits any offense set forth in paragraphs (1) through (3) of this subsection while on any property used for school purposes which is owned by or leased to any elementary or secondary school or school board, or within 1,000 feet of any such school property or a school bus, or while on any school bus, and who is not sentenced to a term of imprisonment, shall, in addition to any other sentence which the court may impose, be required to perform not less than 100 hours of community service.