Employer Reimbursements - Education = Nonaccountable Plan = W-2 box 1

You must include in your income reimbursements your employer gave you for expenses of education that you need to meet the minimum educational requirements for your job, or is part of a program of study that can qualify you for a new trade or business.
Your employer will combine the amount of any reimbursement or other expense allowance paid to you under a nonaccountable plan with your wages, salary, or other pay and report the total in box 1 of your Form W-2.