The Louisiana Department of Revenue has published Revenue Information Bulletin (RIB) 09-19, which explains the set of tax deductions known collectively as the Louisiana School Tuition & Expense Tax Deduction.
There are three deductions that cover a range of expenses including private and parochial school tuition, the costs of school supplies and uniforms for public school students, and home-schooling supplies.
From RIB 09-019:
The deductions, equal to 50 percent of the actual amount paid during the tax year by the taxpayer, limited to $5,000 per dependent, must be reported on Schedule E of the Louisiana Resident Income Tax return, Form IT-540. The deductions are also allowed for Part-Year residents for school expenses paid in Louisiana during the time the taxpayer was a Louisiana resident and must be reported on the Nonresident and Part-Year Resident (NPR) Worksheet of the Nonresident and Part-Year Resident Income Tax return, Form IT-540B. The total amount of the deduction may not exceed the taxpayer’s total taxable income. When filing Form IT-540 or Form IT-540B, the Louisiana School Expense Deduction Worksheet must be attached to the return, and taxpayers must retain all expense receipts as proof of the amounts paid.
Read the full RIB, which includes helpful examples of eligible expenses, at revenue.louisiana.gov.