Paying for college is perhaps a more formidable challenge today than ever. Over the last five years, tuition prices at public four-year colleges have risen by 27 percent above overall inflation, according to a recent College Board survey. Section 529 plans -- special tax-advantaged vehicles designed to aid college savings -- are one option for tackling these growing costs. Still, these plans may not be right for every situation. Here are six key considerations that can determine whether a 529 plan is right for you and your family.