This is the state law. Schools have to right to set their own policies regarding what type of devices constitute a weaponbut cannot upgrade it to a felony.
<font face="TimesNewRomanPSMT-Identity-H"><p align="LEFT">Mississippi Code Annotated Section 973717</p><p align="LEFT">states:</p><p align="LEFT">(1) The following definitions apply to this section:</p><p align="LEFT">(a) "Educational property" shall mean any public or private school building or bus, public or private</p><p align="LEFT">school campus, grounds, recreational area, athletic field, or other property owned, used or operated by any</p><p align="LEFT">local school board, school, college or</p><p align="LEFT">university board of trustees, or directors for the administration of any public or private educational</p><p align="LEFT">institution or during a school related activity? provided however, that the term "educational property" shall</p><p align="LEFT">not include any sixteenth section school</p><p align="LEFT">land or lieu land on which is not located a school building, school campus, recreational area or athletic</p><p align="LEFT">field. (b) "Student" shall mean a person enrolled in a public or private school, college or university, or a</p><p align="LEFT">person who has been suspended or</p><p align="LEFT">expelled within the last five (5) years from a public or private school, college or university, whether the</p><p align="LEFT">person is an adult or a minor. (c) "Switchblade knife" shall mean a knife containing a blade or blades</p><p align="LEFT">which open automatically by the release of</p><p align="LEFT">a spring or a similar contrivance. (d) "Weapon" shall mean any device enumerated in subsection (2) or (4)</p><p align="LEFT">of this section.</p><p align="LEFT">(2) It shall be a felony for any person to possess or carry, whether openly or concealed, any gun, rifle,</p><p align="LEFT">pistol or other </p></font><p align="LEFT"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H">firearm </font></font><font face="TimesNewRomanPSMT-Identity-H">of any kind, or any dynamite cartridge, bomb, grenade, mine or powerful explosive</font></p><font face="TimesNewRomanPSMT-Identity-H"><p align="LEFT">on educational property. However, this</p><p align="LEFT">subsection does not apply to a BB gun, air rifle or air pistol. Any person violating this subsection shall be</p><p align="LEFT">guilty of a felony and, upon conviction thereof, shall be fined not more than Five Thousand Dollars</p><p align="LEFT">($5,000.00), or committed to the custody of</p><p align="LEFT">the State Department of Corrections for not more than three (3) years, or both.</p><p align="LEFT">(3) It shall be a felony for any person to cause, encourage or aid a minor who is less than eighteen (18)</p><p align="LEFT">years old to possess or carry, whether openly or concealed, any gun, rifle, pistol or other </p></font><p align="LEFT"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H">firearm </font></font><font face="TimesNewRomanPSMT-Identity-H">of any</font></p><font face="TimesNewRomanPSMT-Identity-H"><p align="LEFT">kind, or any dynamite cartridge, bomb,</p><p align="LEFT">grenade, mine or powerful explosive on educational property. However, this subsection does not apply to</p><p align="LEFT">a BB gun, air rifle or air pistol. Any person violating this subsection shall be guilty of a felony and, upon</p><p align="LEFT">conviction thereof, shall be fined not</p><p align="LEFT">more than Five Thousand Dollars ($5,000.00), or committed to the custody of the State Department of</p><p align="LEFT">Corrections for not more than three (3) years, or both.</p>
<p align="LEFT">(4) It shall be a misdemeanor for any person to possess or carry, whether openly or concealed, any BB</p>
<p align="LEFT">gun, air rifle, air pistol, bowie knife, dirk, dagger, slingshot, leaded cane, switchblade knife, blackjack,</p>
<p align="LEFT">metallic knuckles, razors and razor blades</p>
<p align="LEFT">(except solely for personal shaving), and any sharppointed</p>
<p align="LEFT">or edged instrument except instructional</p>
<p align="LEFT">supplies, unaltered nail files and clips and tools used solely for preparation of food, instruction and</p>
<p align="LEFT">maintenance on educational property. Any person</p>
<p align="LEFT">violating this subsection shall be guilty of a misdemeanor and, upon conviction thereof, shall be fined not</p>
<p align="LEFT">more than One Thousand Dollars ($1,000.00), or be imprisoned not exceeding six (6) months, or both.</p><p align="LEFT">(5) It shall be a misdemeanor for any person to cause, encourage or aid a minor who is less than eighteen</p><p align="LEFT">(18) years old to possess or carry, whether openly or concealed, any BB gun, air rifle, air pistol, bowie</p><p align="LEFT">knife, dirk, dagger, slingshot, leaded</p><p align="LEFT">cane, switchblade, knife, blackjack, metallic knuckles, razors and razor blades (except solely for personal</p><p align="LEFT">shaving) and any sharppointed</p><p align="LEFT">or edged instrument except instructional supplies, unaltered nail files and</p><p align="LEFT">clips and tools used solely for</p><p align="LEFT">preparation of food, instruction and maintenance on educational property. Any person violating this</p><p align="LEFT">subsection shall be guilty of a misdemeanor and, upon conviction thereof, shall be fined not more than</p><p align="LEFT">One Thousand Dollars ($1,000.00), or be imprisoned</p><p align="LEFT">not exceeding six (6) months, or both.</p><p align="LEFT">(6) It shall not be a violation of this section for any person to possess or carry, whether openly or</p><p align="LEFT">concealed, any gun, rifle, pistol or other </p></font><p align="LEFT"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H">firearm </font></font><font face="TimesNewRomanPSMT-Identity-H">of any kind on educational property if:</font></p><font face="TimesNewRomanPSMT-Identity-H"><p align="LEFT">(a) The person is not a student attending school on the educational property? (b) The </p></font><p align="LEFT"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H">firearm </font></font><font face="TimesNewRomanPSMT-Identity-H">is within a</font></p><font face="TimesNewRomanPSMT-Identity-H"><p align="LEFT">motor vehicle? and (c) The person does not brandish, exhibit or display the </p></font><p align="LEFT"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H"><font color="#0000ff" face="TimesNewRomanPSMT-Identity-H">firearm </font></font><font face="TimesNewRomanPSMT-Identity-H">in any careless, angry</font></p><font face="TimesNewRomanPSMT-Identity-H"><p align="LEFT">or threatening manner.</p><p align="LEFT">(7) This section shall not apply to:</p><p align="LEFT">(a) A weapon used solely for educational or schoolsanctioned</p><p align="LEFT">ceremonial purposes, or used in a schoolapproved</p><p align="LEFT">program conducted under the supervision of an adult whose supervision has been approved by</p>
the school</p></font>