The IRS does not allow a deduction for your time and labor "donated", but you can deduct any out of pocket expenses up to $250 incurred for your mentoring as an Educator deduction if you are mentoring K-12 students .
To enter the above expenses:
Type in teacher supplies in the search box, top right of your screen, then click the
magnifying glass
Click the jump
to teacher supplies link in the search results
Follow to prompts and online instructions