I tutor the three main subjects that people seem to want tutoring in; Math, Science and English. (Actually, it's five subjects if you break the Science down into Biology, Chemistry and Physics.)
This means that I can potentially cover a different subject each week, or I can do two hours a week and cover a different subject in each hour. Therefore you don't have to find a separate tutor for each subject or leave your child without the valuable one-to-one support in any of the core subjects.
And I generally teach these subjects from about age 10 to 20, so I give my students stability and continuity through all of those most stressful years of study.