"Getting teaching jobs" and "needed to keep job" are two different things for tax purposes. Education to qualify you for a new job is not deductible as a job expense. Education to improve the skills of your current job and/or required by your employer are deductible.
If the school that gave the course is an "eligible institution", the tuition may qualify for a tuition credit or adjustment to income ("above the line" deduction) without regard to your employment status.
