Some of the most exclusive schools in the US offer free-tuition programs for lower- and middle-class students. Jay Yuan/Shutterstock The cost of a college education keeps rising, hitting six figures annually at some schools. Dozens of schools across the US offer free tuition, often tied to income or work requirements. Some of the most selective colleges and universities offer generous financial aid for students. The cost of a college education has only been rising, and at some US schools, the