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USABO: Guidelines and Eligibility

High School Students

After a school’s or an authorized USABO Test Center's registration fee of $95 has been received (Payment is due no later than January 22, 2020), 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.

Students may register for the USABO after Student Registration opens. They can access some resources in the Student Corner, learn how to start a USABO Club, and find suggested study resources. They can only access the Student Resource Center (SRC) after their school's $95 registration fee has been received and the school's or Center's account has been activated.

Each student who is taking the exam must register for the current year's USABO. Students should click here to register for the 2020 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.

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.

Please note that the Open and Semifinal Exams may be administered ONLY in the timeframe that is published. Each exam may only be administered once by each school or test center and must be administered in the same location, on the same date, and at the time for that school or test center.

Eligibility Requirements

  • High school seniors are eligible provided that they have not enrolled formally in an undergraduate program at a college or university.
  • All interested students in grades 9 to 12 are eligible to participate in the USABO.
  • Students must be U.S. citizens or legal permanent residents of the United States.
  • Home-schooled students are invited to participate in the USABO. Arrangements must be made before the close of registration through the USABO to participate in the exam at high schools within their local area. Home-schooled students may be responsible for the $95.00 registration fee.