As teachers head back to school, they often pay expenses for which they don’t receive reimbursement. Fortunately, they may be able to deduct some of them on their tax returns. You don’t have to itemize your deductions to claim this “above-the-line” tax break. For 2019, educators can deduct up to $250 of eligible expenses that weren’t reimbursed. Eligible expenses include books, supplies, computer equipment, software, other classroom materials, and professional development courses. To be eligible, taxpayers must be kindergarten through grade 12 teachers, instructors, counselors, principals or aides. They must also work at least 900 hours a school year in an elementary or secondary school.