Returning Schools/ Institutions
After a school’s or authorized USABO Test Center's registration fee of $125 has been received (Payment is due no later than October 23, 2026 , the school’s or Center's account will be activated. The teacher/administrator will receive an email confirming that payment has been made and that they now have access to the Teacher Resource Center (TRC). To do so, the teacher/administrator should log in on the USABO Homepage with his/her unique ID number received by email and the password s/he created at registration. The USABO does not retain passwords. If a password is forgotten, please create a new one using the online Password Feature.
Schools/Institutions
Before a registered school's/institution's account may be activated, the account will be reviewed. If necessary, a request may be sent to provide documentation and proof of compliance with the following:
Test Administrators are encouraged to nominate all students who are interested in taking the Open Exam, particularly students who have taken advanced or AP biology courses or the equivalent.
Student Registration
Students may register for the USABO after Student Registration opens. They can access some resources in the Student Corner such as Learn How to Start a USABO Club and Suggested Study Resources . Students may only access the Student Resource Center (SRC) after their school's $125 registration fee has been received and the school's or Institution's account has been activated.
Each student who is taking the exam must register for the current year's USABO ID numbers are valid for one year. Test Administrators and Students must register for the current year of the USABO. Students should click here to register for the 2027 USABO. Once a student has registered, the student receives his/her own unique ID number that will allow him/her access to the resources on the Student Resource Center (SRC) after the registration fee is received for his/her school or Center. This unique student ID number MUST be used for all USABO exams and is only valid for the current year.
A student may register for the USABO with another school through the “My school is not participating in the 2027 USABO” feature found on the USABO Homepage. You may register when the site is open to have a school potentially identified as a host school. While every effort is made to identify a host school, there is no guarantee that a host school will be identified. All requests for registration with another school with must be approved by the USABO to ensure that all legal restrictions of the school and its administration are respected and followed. If the student progresses to the Semifinal or Finals, the host school, not the student's school of record, will be recognized as supporting them in pursuing the USABO.
Please note that the Open and Semifinal Exams will be administered only once on the online platform Synap on the date and time as published in the online calendar. Students will receive an email from Synap to register their USABO ID# via Synap link. These credentials will be used for all exams.
Eligibility Requirements