American Mathematics Competition (AMC) 10/12

Registration Information

Orange County Math Circle will be hosting the 2021 AMC 10/12A and the AMC 10/12B VIRTUALLY on Thursday, February 4, 2021 and Wednesday, February 10, 2021, respectively. We welcome all students below 10th grade and 12th grade* to attend. The fee is $20 per participant. The proceeds raised will cover exam administrative expenses, OCMC tournaments, and other OCMC service projects. Only online payment will be accepted; we accept credit card and PayPal.


A student may only take one competition per competition date. Students are permitted to take the A version of any competition and the B version of any competition if they meet the age and grade requirements. If a student is found to have taken the same AMC 10/12 test more than once, that student will be disqualified by the Mathematical Association of America (MAA). Please read the important reminder from the MAA regulations on cheating, disqualification, and etc.


Students may only have scratch paper, rulers, pencils and erasers as aids. No calculators or cell phones will be allowed.


There will be no refunds for cancellations.


Email all inquiries and concerns to OC Math Circle at  and we will respond as soon as we can.


IMPORTANT REMINDER from the Mathematical Association of America (MAA)



To participate in the AMC 10, a student must be in grade 10 or below and also under 17.5 years of age on the day of the competition.

To participate in the AMC 12, a student must be in grade 12 or below and also under 19.5 years of age on the day of the competition.


During the competition, students are only allowed:

- writing utensils

- blank scratch paper

- rulers

- erasers

Prohibited materials include: calculators, smartwatches, phones, computing devices, compasses, protractors, and graph paper.



All cheating accusations are taken seriously by the MAA AMC office, and must be reported immediately to If it is clear to the proctor from personal observation that a participant has cheated, the proctor must disqualify that participant and notify the AMC.


When submitting a cheating accusation It is critical to support the claim with facts or documentation. If the proctor receives an accusation or obtains indirect evidence of cheating, the proctor must immediately report all evidence of the situation to the MAA AMC Office at The MAA AMC Office will determine further action.


The MAA AMC Office reserves the right to disqualify scores if it determines the rules or the required security procedures were not followed.


Disqualified students

Scores will be removed from AMC historical data, and students will be ineligible to compete for the remainder of the competition cycle.



Problems and solutions may not be discussed with anyone either orally or digitally until 24 hours have passed from the official competition date.


Reproduction or dissemination via phone, email, or digital media of any type is a violation of the competition rules. Students will be disqualified.