Mississippi Code Title 37. Education § 37-11-25

If any public school official of this state or of any county or municipality or school district thereof, or any superintendent, principal, or teacher in the public schools, or any trustee of a school district shall be interested, either directly or indirectly, in the proceeds or profits of the sale or rental of any book, furniture, equipment or other property to be used in any public schools of this state such person shall be guilty of a misdemeanor and, upon conviction, he shall be fined not less than Two Hundred Dollars ($200.00) nor more than Five Hundred Dollars ($500.00). However, nothing in this section shall be construed to apply to the receipt of royalties on books or other publications used in the public schools.