The Duke University ranking in the GPA system is Top 50 / Tier 2.
Duke University is well-known in the United States but not so much internationally. Its medical school is especially outstanding. Even though it is highly ranked in the USA and by other international rankings, its perception index is weak and at times even negative, owing in part to its “blue devils” mascot and perception that sports are given too much importance. For this and various reasons, Duke still belongs to the World’s Top 50 but is assigned Tier 2 label.
The tuition fee is estimated at USD 50,000 per year (a standard tuition fee for such institutions in the USA).
Duke University web site: http://www.duke.edu
THE (Times of Higher Education) ranking: https://www.timeshighereducation.com/world-university-rankings