r/IBO↗
International Baccalaureate
This is the unofficial subreddit for all things concerning the International Baccalaureate, an academic credential accorded to secondary students from around the world after two vigorous years of study, culminating in challenging exams. This subreddit encourages questions, constructive feedback, and the sharing of knowledge and resources among IB students, alumni, and teachers. Note that the subreddit is not run by the International Baccalaureate.
186k subscribers1,278 posts / mo in Sep 2026918 authors / mosince 2010
r/IBO has 186k members (+17% over the last 12 months). It gets about 1,278 posts a month from 918 people. Top topics: IB Diploma Program, IB Math and Exam Cancellations & IB Updates.
When to post on r/IBO
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How r/IBO has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/IBO
Top topics
Share of the subreddit's posts
- IB Diploma Program18%
- IB Math6.0%
- Exam Cancellations & IB Updates3.7%
- IB & Exam Resources2.6%
- English Literature and Language1.8%
Brands people mention
Most-mentioned brands and sites, last 12 months
- International Baccalaureate
- Revision Village
- Clastify
- IB Docs
- Christosnikolaidis
Everything else about r/IBO
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research