The IBO info center

Here you will find results and exam papers of past IBOs as well as further important information as files for download.

Results & reports

The final ranking of IBO competitors is based on the raw scores for practical and theoretical examinations recalculated with the use of equally weighted T-scores for both of them.


Studying for a future IBO? Searching for advanced, authentic biological contexts for your teaching or your exams? Check out our exam paper data base.

Rules & Guidelines

Do you have specific questions about how our association or the annual competition work? This section takes you to our rules and guidelines.


IBO’s alumni are currently organized on a separate website, organized by our esteemed colleague Junichi Saito / NBO Japan.

Educational Conferences

IBO is also about exchanging educational best practices in Biology, worldwide. Here are some outcomes of Educational Conferences held during recent IBOs.

IBO Publications

Find here a list of publications related to IBO.