As used in this subpart, the term:

(1) "Expulsion" means expulsion of a student from a public school beyond the current school quarter or semester.

(2) "Long-term suspension" means the suspension of a student from a public school for more than ten school days but not beyond the current school quarter or semester.

(3) "Short-term suspension" means the suspension of a student from a public school for not more than ten school days.

(4) "Weapon" means a firearm as such term is defined in Section 921 of Title 18 of the United States Code.