Two tests are offered, the AMC 10 and the AMC 12.
The AMC 10 is a 25 question, 75 minute multiple choice examination in secondary school mathematics containing problems which can be understood and solved with pre-calculus concepts. It can be taken only by 10th graders and under.
The AMC 12 is the same, but slightly more difficult and for 12th graders and under.
On neither test do you use a calculator.