What grades does secondary 2-4 correspond to for international students?
Secondary 2-4 (age 14-16) corresponds to UK years 9-11 and US grades 8-10.

Will past year SJBO papers be made available to schools?


The SJBO paper is a mix of IBO level questions, O level questions and A level questions. Past year IBO papers can be accessed at https://www.ibo-info.org/en/info/papers.html

What are the biology topics tested in SJBO?

The list of topics that will included are listed in the SJBO registration briefing slides (available from download on the SJBO website). Topics typically tested is based on the IBO syllabus. 

The SJBO Theory Round is 2 hours. Can it be taken anytime throughout the day?

Yes, the school can decide what time to hold the test within the 8am–6pm window on the day of the online theory test.

Where can SJBO Theory Round be held?

SJBO seeks cooperation from teachers and school to uphold he integrity of SJBO as a national level competition. The online test as a competition must be held at the school – we advise the test be conducted in a computer lab or classroom/hall with the school’s portable laptops. If required (e.g. for safe distancing measures), students may take the test in batches, for as long as there is no communication whatsoever between the batches (e.g. two batches immediately one after another). Every batch must be invigilated.

How many invigilators are required?

The number of invigilators would be based on the number of students taking the paper, it should follow typical schoolwide exam conditions and requirements. Specific instructions for invigilation will be circulated to school prior to the competition.

Can students go back to change an answer before submission?


Must all students sit through the 2 hours for the theory test, or can they leave should they complete the test early?

Students are allowed to leave at any point during the competition or once they have submitted the test but they are to notify the invigilator before they exit the test venue.

If a student registered but is not able to sit for the Theory Round, will the registration fee still be charged?

Yes, registration fees will still be charged for any absentees. Replacing absent student/s with other student/s on the day of the theory test is not allowed. Student absentees with a valid reasons will have the option of taking the test at home as an ungraded Challenge. *See FAQ below as to what constitutes valid reason.

If a student is not able to sit for the Theory Round at school, will he/she be allowed to take the test at home?

Due to the special circumstances (COVID-19), the SJBO Organising Committee has decided that student will be allowed to take the online test at home as a Challenge instead of a Competition if there is a valid reason for their absence.

The only accepted valid reason for absence is if the student is feeling unwell or serving stay-home-notice.

Should a student be absent, the teacher-in-charge must email sjbo@sibiol.org.sg by 12pm (noon) on the same day. Ensure the email subject is “Absentee for SJBO”, and includes the following details:

  1. Name of school
  2. Student’s full name
  3. Student’s access code
  4. Valid reason for absence
  5. Scanned copy of the NDA signed by both the teacher and student*

Teacher-in-charge will then be sent the link and instructions for the Theory Test as a Challenge, which will be held from 6-8pm on the same day as the Theory Round and will not need to be invigilated by a teacher. The student will receive a Certificate of Participation.

*The student is still obliged to abide by the Non-Disclosure Agreement despite completing the challenge without invigilation.

What are the allowed payment modes?

From 2020 onwards, SJBO only accepts payment via Vendors@Gov or electronic bank transfer. The preferred payment mode for SJBO should be indicated in the registration form by the school, and an e-invoice will be generated based on the mode of payment indicated.

For any queries regarding SJBO please contact us at sjbo@sibiol.org.sg.


The Singapore Junior Biology Olympiad is registered under SIBIOL