IB DIPLOMA
IB school rankings
Compare international schools by their published IB Diploma results. Choose a year, check the scores and learn more about each school.
Leading schools in 2025
The highest average scores in our records for this year. This is not a list of every IB school worldwide.
| Rank | School | Average | Source |
|---|---|---|---|
| 1 | Makuhari International SchoolJapan | 42 / 45 | Source |
| 2 | Chinese International SchoolHong Kong | 40.9 / 45 | Source |
| 3 | Tanglin Trust SchoolSingapore | 39.6 / 45 | Source |
| 4 | Canadian International School of SingaporeSingapore | 38.7 / 45 | Source |
| 4 | Dulwich College BeijingChina | 38.7 / 45 | Source |
| 4 | Harrow International School BeijingChina | 38.7 / 45 | Source |
| 7 | Dulwich College Shanghai PudongChina | 38.1 / 45 | Source |
| 8 | Beijing World Youth AcademyChina | 38 / 45 | Source |
| 8 | Léman International School ChengduChina | 38 / 45 | Source |
| 8 | St. Joseph's Institution International SchoolSingapore | 38 / 45 | Source |
Compare results by year
How do I find the best IB school?
The best IB school depends on your child. Compare results alongside fees, location, subjects, teaching language and student support. Visit the school if you can.
Find a schoolWhat do these rankings measure?
Schools are ranked by their average IB Diploma score out of 45. Compare the same year and check how many students took the exams. Equal scores share a rank.
Where do the results come from?
We collect published results and link to the source. Some schools do not publish results, so they may be missing. A missing result does not mean a low score.
How does “All years” work?
We average each school’s available yearly results. Each year has equal weight. Schools may have different years of data, so check the yearly results too.