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## AMC

The **American Mathematics Competitions (AMC)** are the first of a series of competitions in high school mathematics that determine the United States team for the International Mathematical Olympiad (IMO). The selection process takes place over the course of roughly four stages. At the last stage, the Mathematical Olympiad Summer Program (MOSP), the United States coaches select six members to form the IMO team. The United States Math Team of 1994 is the only team ever to achieve a perfect score (all six members earned perfect marks), and is colloquially known as the “dream team”.

There are three levels:

- the AMC 8 is for students in grades 8 and below
- the AMC 10 is for students in grades 10 and belowa
- the AMC 12 is for students in grades 12 and below

Students who perform well on the AMC 10 or AMC 12 exams are invited to participate in the American Invitational Mathematics Examination (AIME). Students who perform well on the AIME are then invited to the United States of America Mathematical Olympiad (USAMO) or United States of America Junior Mathematical Olympiad (USAJMO). Students who do exceptionally well on the USAMO (typically around 30 students) are invited to go to the Mathematical Olympiad Summer Program (MOSP or more commonly, MOP), and six students are selected from the top twelve scorers on the USAMO (through yet another exam, the Team Selection Test (TST)) to form the United States International Math Olympiad Team.

**American Mathematics Competitions** is also the name of the organization, based in Washington, DC, responsible for creating, distributing and coordinating the American Mathematics Competitions contests, which include the American Mathematics Contest, AIME, and USAMO.

**History**

The members of the Committee on the American Mathematics Competitions (CAMC) are dedicated to the goal of strengthening the mathematical capabilities of our nation’s youth. The CAMC believes that one way to meet this goal is to identify, recognize and reward excellence in mathematics through a series of national contests called the American Mathematics Competitions. The AMC include: the American Mathematics Contest 8 (AMC 8) (formerly the American Junior High School Mathematics Examination) for students in grades 8 and below, begun in 1985; the American Mathematics Contest 10 (AMC 10), for students in grades 9 and 10, begun in 2000; the American Mathematics Contest 12 (AMC 12) (formerly the American High School Mathematics Examination) for students in grades 11 and 12, begun in 1950; the American Invitational Mathematics Examination (AIME), begun in 1983; and the USA Mathematical Olympiad (USAMO), begun in 1972.

^{ }

Years |
Name |
No. of questions |
Comments |

1950–1951 | Annual High School Contest | 50 | New York state only |

1952–1959 | Nationwide | ||

1960–1966 | 40 | ||

1967–1972 | 35 | ||

1973 | Annual High School Mathematics Examination | 35 | |

1974–1982 | 30 | ||

1983–1999 | American High School Mathematics Examination | 30 | AIME introduced in 1983, now is a middle step between AHSME and USAMO
AJHSME, now AMC 8, introduced in 1985 |

2000–present | American Mathematics Competition | 25 | AHSME split into AMC10 and AMC12 A&B versions introduced in 2002. USAMO split into USAJMO and USAMO in 2010. AMC 10 qualifiers who pass AIME go to USAJMO |

**Benefits of participating**

There are certain rewards for doing well on the AMC tests. For the AMC 8, a perfect score may earn a book prize or a plaque (as it did for the students who achieved perfect scores in 2002); a list of high scoring students is also available to colleges, institutions, and programs who want to attract students strong in mathematics. This may earn a high scorer an invitation to places like MathPath, a summer program for middle schoolers. The top-scoring student in each school is also awarded a special pin.

For the AMC 10 and AMC 12, a high score earns recognition (in particular, perfect scorers’ names and pictures are published in a special awards book); as with the AMC 8, a list of high-scoring students is also available to colleges, institutions, etc. The top-scoring student in each school is awarded a special pin, or a bronze, silver, or gold medal, depending on how many times he or she was the top scorer. For more information on awards, visit Awards for the AMC.

In addition, high scorers on the AMC 10 and AMC 12 qualify to take the next round of competitions, the 3-hour long American Invitational Mathematics Examination (AIME), typically held in March or April. Any student who scores in the top 1% on the AMC 10 (or 2.5% as of 2011), scores in the top 5% on the AMC 12, scores at least 100 points on the AMC 12, or scores at least 120 on the AMC 10 is invited to take the AIME. The answer to each of the 15 questions on the AIME is an integer between 0 and 999 inclusive, so while it is technically a multiple-choice test, it is not one in practice.

The combined scores of the AMC 12 and the AIME are used to determine approximately 270 individuals that will be invited back to take a 9-hour, 2-day, 6-problem session of proofs known as the United States of America Mathematical Olympiad (USAMO), while the combined scores of the AMC 10 and the AIME are used to determine approximately 230 individuals that will be invited to take the United States of America Junior Mathematical Olympiad (USAJMO), which follows the same format. Approximately thirty students are selected based on their USAMO performance to be trained at the Mathematical Olympiad Summer Program, or MOSP (better known as MOP to its participants). Approximately 12 of the top USAJMO scorers are invited as well. Unless qualifying for a particularly high level, all students must be in 9th grade or higher to be admitted into MOSP, and high school seniors are admitted only if they are members of that year’s IMO team.

During this summer camp, a 3-day exam (the TSTST) is given to determine the approximately 18 individuals who will form the TSTST group. These individuals take a series of contests throughout the year, such as the Asian Pacific Mathematics Olympiad, to finally pick the 6 member US Mathematics Team that will represent the US at the International Math Olympiad. The current head coach of the US IMO team is Po-Shen Loh from Carnegie Mellon University

**Rules and scoring**

**AMC 8**

The AMC 8 is a 25 multiple-choice question, 40 minute test for middle schoolers designed to promote the development and enhancement of problem solving skills. No problems require the use of a calculator, and their use has been banned since 2008. The contest is held on a Tuesday in November; this year, on Tuesday, November the 17th.

The AMC 8 is scored based on the number of questions answered correctly only. There is no penalty for getting a question wrong, and each question has equal value. Thus, a student who answers 23 questions correctly and 2 questions incorrectly receives a score of 23. This is not a standardized test; i.e. no school has to take it, but some schools choose to, mainly to encourage growth in mathematics among their students. Full scorers on the AMC 8 (25/25) get recognition and their picture on the AMCs web site as a top scorer.

**Rankings and Awards**

**Ranking**

Based on questions correct:

- 22 and up: Distinction/top 1%
- 18 and up: Honor Roll/top 5%
- 15 and up: Merit

In 2013, anyone who scored 18-21 was considered to be the top 5% and people who scored 22 and above were considered to be the top 1%. In 2014 anyone who scored 18-22 were considered top 5% 23 and above was top 1%

**Awards**

- A Certificate of Distinction is given to all students who receive a perfect score.
- An AMC 8 Winner Pin is given to the student(s) in each school with the highest score.
- The top three students for each school section will receive respectively a gold, silver, or bronze Certificate for Outstanding Achievement.
- An AMC 8 Honor Roll Certificate is given to all high scoring students.
- An AMC 8 Merit Certificate is given to high scoring students who are in 6th grade or below.

**AMC 10 and AMC 12**

The AMC 10 and AMC 12 are a 25 question, 75 minute multiple choice examination in secondary school mathematics containing problems which can be understood and solved with pre-calculus concepts. From 1994-2007, calculators were allowed, but like the AMC 8, unneeded.^{[3][1]}

Since the 2007-2008 school year, calculators have been disallowed on all of the selection tests for the International Math Olympiad Team (including AMC, AIME, USAMO, TST)

High scores on the AMC 10 or 12 can qualify the participant for the American Invitational Mathematics Examination (AIME). On the AMC 10, a score of at least 120 is usually required; on the AMC 12, a score of at least 100 is usually required. This corresponds to the top 5% of students who took the AMC 12 and the top 2.5% of students who took the AMC 10.

Each exam is scored based on the number of questions answered correctly and the number of questions left blank. A student receives 6 points for each question answered correctly, 1.5 points for each question left blank, and no points for incorrect answers. Thus, a student who answers 18 correctly, leaves 5 blank, and misses 2 gets 18×6 + 5×1.5 = 115.5 points. The maximum possible score is 6×25 = 150 points; in 2006, the AMC 12 had a total of 17 perfect scores between its two administrations, while the AMC 10 had 89.

From 1974 until 1999, the exam had 30 questions and was 90 minutes long, scoring 5 points for correct answers. Originally during this time period, 1 point was awarded for leaving an answer blank, however it was changed in the late 1980s to 2 points for omitted questions. When the exam was shortened as part of the 2000 rebranding, the value of a correct answer was increased to 6 points (keeping 150 as a perfect score). In 2001, the score of a blank was increased to 2.5 to penalize guessing. The 2007 exams were the first with only 1.5 points awarded for a blank, to discourage students from leaving a large number of questions blank in order to assure qualification for the AIME. For example, on the AMC 12, a student could advance with only 11 correct answers, presuming the remaining questions were left blank. Now, a student must answer at least 14 questions correctly to reach 100 points.

The exams somewhat overlap, with the medium-hard AMC 10 questions being the same as the medium-easy ones on the AMC 12. Since 2002, two administrations have been scheduled, so as to avoid conflicts with school breaks. Students are eligible to take an A exam and a B exam, and may even take the AMC 10-A and the AMC 12-B, though they may not take both the AMC 10 and AMC 12 from the same date. If a student takes both exams, they may use either score towards qualification to the AIME or USAMO.

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