Mar 11, 2019

Brazilian Science Olympiad (OBC)

  • Crimson Education
  • Brazil


The Olimpíada Brasileira de Ciências is a national competition that selects students to represent Brazil in the international competitions International Junior Science Olympiad (IJSO) and Olimpíada de Ciências Júnior Americana (OCJA). Participants are evaluated based on their knowledge of physics, chemistry and biology. 

In 2020, the 17th edition of the IJSO will take place in December in Frankfurt (Germany) and should count on the participation of delegations from more than 50 countries, representing all continents.

Please note - following the development of the coronavirus outbreak, the CBO 2020 calendar will be revised following the government guidelines. 

For more information visit the official website here

Type of Opportunity

Extracurricular Activity

Age Range




Approximately 25 medals are awarded to students from around Brazil in the final national stage of competition, while just 6 are selected to attend the International Junior Science Olympiad, representing Brazil.

Participation Cost


There is no registration fee.

Minimum Technical Skill Needed


Competitors must possess substantial knowledge of physics, chemistry, and biology in order to qualify for a medal through the multiple stages of competition and eventually, go on to the international event.

Time Commitment


Three phases of national competition plus extensive preparation time.

Application Deadline

Online Registration: until May 14, 2020

Application Process Includes

1. School signs up to participate and apply First Phase test in their school.
2. Top 3 students from each region in the First Phase or those that achieve points above the national cut-off qualify for the Second Phase, a test that they take at the designated regional hubs.
3. The Top 25 students in the Second Phase receive medals and are invited to the International Selective. 4. The top 6 students from the Selective go on to the compete at the IJSO international competition, representing Brazil.

National phases of the competition take place over several months.