107 free online courses from the best colleges in the US - including Princeton, Harvard, and Yale

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Coursera was founded by two professors at Stanford University.

• Online learning sites Coursera and edX allow you to audit classes from top universities for free.
• For additional fees, you can gain access to course certificates, assignments, tests, and even receive a final grade.
• Course topics vary widely - from business management to social justice, food science to structural engineering - there's something for everyone.

Every year, US News & Reports releases its ranking of the top universities in the country. These schools are renowned for their rigorous academic and research programs, professors and faculty members with resumes packed with accomplishments, and beautiful campuses - but they're not easy to get into, nor are they affordable to attend.

Thankfully, online learning sites like Coursera and edX are helping to increase access to high-quality education for everyone. Their free and low-priced courses are taught by instructors from the best universities and academic institutions around the world, allowing anyone to advance their education, professional goals, or personal interests.

Both Coursera and edX allow you to audit any course for free. You get access to course materials and follow along with the class as it progresses. For an additional $40 to $160 (depending on the course) on edX, you receive a verified certificate that you can include in your resume or on your LinkedIn profile. Meanwhile, expanded access to Coursera courses includes assignments, tests, and a final grade, and costs $29 to $99 per course.

Coursera and edX also each offer in-depth specializations that require some more commitment and help learners develop the professional skills that are in demand in their industries today.

A decade ago, you wouldn't have been able to easily take classes from these top-ranked schools. Now, you can. We rounded up the Coursera and edX courses from each of the schools so you can skip directly to your favorite university, or browse all that each has to offer.

Take online classes from the following top 14 universities in the country.

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