(a) As used in this section:

(1) "Qualified classroom investment expense" means the amount expended by a teacher during the tax year for materials used in the classroom, including without limitation the following:

(A) Books;

(B) School supplies;

(C) Computer equipment and software;

(D) Athletic equipment;

(E) Food for the teacher's students; and

(F) Clothing for the teacher's students; and

(2) "Teacher" means a teacher, instructor, counselor, principal, or aide for students in any grade from prekindergarten through grade twelve (preK-12) who is employed for at least nine hundred (900) hours in a tax year at a school certified by the state to provide public preschool, elementary, or secondary education.

(b) In computing net income for the purposes of this chapter, there is allowed as a deduction in addition to all other deductions allowed by law for the qualified classroom investment expenses incurred by a taxpayer.

(c) The deduction allowed under subsection (b) of this section shall not exceed two hundred fifty dollars ($250) per taxpayer or five hundred dollars ($500) for taxpayers who are married filing jointly if each taxpayer is a teacher.

(d) The Director of the Department of Finance and Administration shall promulgate rules to implement this section, including without limitation a form for a taxpayer to use in claiming the deduction provided for under this section.

(e) A taxpayer claiming a deduction under this section shall:

(1) Maintain receipts for his or her qualified classroom investment expenses; and

(2) Itemize the qualified classroom investment expenses on the form provided by the Department of Finance and Administration.