QS, or Quacquarelli Symonds, is a global higher education company known for its university rankings, which help students make informed choices about their education. Founded in 1990, QS publishes the annual QS World University Rankings, evaluating universities based on criteria such as academic reputation, employer reputation, faculty/student ratio, and research impact. In addition to rankings, QS offers various services, including QS World Grad School Tour, which connects prospective graduate students with universities worldwide. The organization also provides resources for students, such as QS Top Universities, a platform that offers information on courses, scholarships, and university reviews.