Tutor.com

Tutoring and homework help provided at no cost to service members and their eligible dependents. A program that allows eligible college and grades K-12 students in U.S. military families to connect to a live tutor online at any time for one-to-one help with homework, studying, test prep, proofreading and more. Click the blue button on the webpage showing your family's branch of service to determine your eligibility and to create an account.

Source: http://military.tutor.com/home