If students are interested in tutoring, here are some options:
1) Teachers may be available for extra help before or after school.  Contact teachers for more details.
2) Learning Centers are available during the school day to help students who are struggling.
3) Teachers may know of people who are qualified tutors in their subject areas.

Other Resources:
Tutor.com for Military Families
Student Questions
Khan Academy
IXL
Learn To Be