As a college entrance examination, ACT is sponsored by ACT, Inc., an American non-profit educational examination research institution, and it is a test of students' comprehensive ability. It focuses on investigating the academic level of senior high school students, scientifically evaluating students' knowledge and ability in school, and benchmarking their preparation level and degree for university study.

The required subjects are English, mathematics, reading and science, all of which are multiple-choice questions, ***2 15. The total score is 36 points, and the test time is *** 175 minutes. Candidates who write can choose for themselves. Among them, the most noteworthy is the scientific reasoning part of the ACT exam, which integrates physics, chemistry, biology, astronomy, geology and other subjects in senior and junior high schools into a test paper, which appears in the form of reasoning questions to examine students' fast reading ability, chart analysis ability, subject reasoning ability and subject knowledge vocabulary recognition ability.

After the reform, students can score a single subject according to their own situation, and they can freely choose five subjects such as English, mathematics, reading, science or writing, and they can concentrate on one subject or at most three at a time. Single-subject retakes are only available to students who have taken the full ACT exam, but there is no limit on the number of retakes. For the time being, only the American examination room provides the single-subject retake, and it is only provided in the computer examination mode, and the paper examination does not provide the single-subject retake option. International candidates can take the full exam outside the United States and retake the single subject in the American examination room. Although the date of retaking the single subject is the same as that of the regular examination, the candidates who retake the single subject and the candidates who take the complete examination take the examination in different rooms, which does not affect each other.

In the past, ACT scores were judged by comprehensive scores, and the average scores of four subjects were used. After adopting the scoring policy, the scoring results will adopt the highest scores obtained in the four subjects of the history exam, and then take the average.

Students can choose whether to submit their scores. When delivering the scores, the school can see all the scores of the single-subject exams involved. More and more universities begin to accept ACT to evaluate students' overall academic achievements and full potential.