The International Biology Olympiad (IBO) is a science olympiad for highschool students under the age of 20. The first academic international Olympiads after the (originally Eastern European-based) International Mathematical Olympiad were launched under the auspices of the United Nations in the 1960s. The programs have gradually expanded to include more than 70 participating countries across five continents. The IBO is one of these olympiads. All participating countries send the four winners of their National Biology Olympiad to the IBO, usually accompanied by two adults who are members of the international jury for the duration of the competition.
The aims of the IBO are to promote a career in science for talented students and to stress the importance of biology in our current society. It also provides a great opportunity to compare educational methods and exchange experiences. This is useful information to improve biology education on a national level. Since the organization of every National Olympiad requires the cooperation of many institutions, such as ministries of education, industry, teachers' associations, universities and schools, communication and cooperation between those institutions is promoted and intensified. Lastly, the IBO stimulates contact between students and teachers from many countries in a friendly environment. To demonstrate this, both students and jurors swear an oath of behaving according to the principles of fair play.
The competition itself is composed of a theoretical and practical element. The theory exams cover a wide range of Biology: Cell Biology, Molecular Biology, Plant Anatomy and Physiology, Animal Anatomy and Physiology, Ethology, Genetics and Evolution, Ecology, and Biosystematics. The marks are scaled so that the theory and practical components each have a weighting of about fifty percent.
All participants are ranked based on their individual scores. These are based on the results of a theoretical and a practical test, each making up approximately fifty percent of the final score. Gold medals are awarded to the top ten percent of students, silver medals are awarded to the next twenty percent of students and bronze medals are awarded to the next thirty percent of students.
The official language of the IBO is English. To provide equal opportunities for all participants, the tests are translated prior to the testing days. This is done by each country's jurors. This means they hold specific information on the tests before the participants should know. Therefore, jurors and students are lodged in separate accommodation.