Grant Moles, son of Jack and Shelley Moles and a junior at Johnson County Central High School, earned a top composite score of 36 on a recent ACT test. Nationally, while the actual number of students earning a composite score of 36 varies from year to year, on average, less than one-tenth of 1 percent of students who take the ACT earns the top score. Among test takers in the high school graduating class of 2014, only 1,407 of nearly 1.85 million students earned a composite score of 36. The ACT consists of tests in English, mathematics, reading and science. Each test is scored on a scale of 1-36, and a student's composite score is the average of the four test scores. Some students also take ACT's optional Writing Test, but the score for that test is reported separately and is not included within the ACT composite score.