The Competition

Clownfish in Aquarium



2021 Dates

  • Informational meeting with Beckman Biology Olympiad:​ 4/1/2021 2:30 PM

  • Registration opens: 4/1/2021

  • Registration closes: 4/28/2021 11:59 PM PST

  • Competition date: 5/13/2021 2:30 PM PST (Zoom Meeting)

  • Awards ceremony video: 6/7/2021

  • 2022 competition coming soon!


Biology Challenge stimulates curiosity for the natural world and encourages students to take an interest in biology outside of school.


The international competition consists of two, twenty-five-minute multiple choice papers to be taken online (individually) under staff supervised exam conditions.

Questions will be set on the school curriculum, but the competition will also reward those students whose knowledge of the subject has been increased by reading books and magazines, watching natural history programs, taking notice of the news media for items of biological interest, and are generally aware of our natural flora and fauna.

Age 13-15 students (and equivalent age groups worldwide) are eligible. Almost 48,000 students participated in the 2020 Biology Challenge, with many gold, silver, bronze, and commended certificates given every year!

OC Biology will be hosting the Biology Challenge

for the 2022 competition (details coming soon).




Congratulations to the participants from OC Biology who competed and won at the 2021 international Biology Challenge! 

Gold Medal

Devon Chang

Jeremy Chen

Joseph Chen

Veda Dayananda

Payton Lin

Gerald Lu

Brandon Martin

Ethan Nguyen-Khoa

Cloris Shi

Erin Song

Annabel Tiong

Xinchun Audrey Zhang

*Note: names are written in alphabetical order

Silver Medal

Madeleine Chang

Cody Gee

Lucy Xu

*Note: names are written in alphabetical order

Bronze Medal

Dory Meng

Highly Commended

Timothy Tan


2021 Biology Challenge OC Biology Testing Site