How ACT Scoring Works
The ACT consists of four multiple-choice sections: English (75 questions, 45 minutes), Math (60 questions, 60 minutes), Reading (40 questions, 35 minutes), and Science (40 questions, 35 minutes). There is also an optional Writing section (1 essay, 40 minutes) that is scored separately and does not affect the composite.
Each section uses rights-only scoring: you earn one raw point for each correct answer and zero for incorrect or blank answers. There is no penalty for guessing. Your raw score is then converted to a scaled score from 1 to 36 using a conversion table specific to that test form. The conversion accounts for slight differences in difficulty between test versions, so a scaled score of 25 on one test date represents the same level of ability as a 25 on another.
The Composite Score Formula
Composite Score = (English + Math + Reading + Science) / 4, rounded to the nearest whole number
The composite is a simple average. Each section carries equal weight regardless of how many questions it contains. English has 75 questions and Reading has 40, but both contribute equally to the composite because both are scored on the same 1-36 scale.
Maya Singh, a student in Pinewood Falls, scored 65 correct out of 75 on English (scaled 29), 45 out of 60 on Math (scaled 27), 33 out of 40 on Reading (scaled 29), and 30 out of 40 on Science (scaled 26). Her composite: (29 + 27 + 29 + 26) / 4 = 27.75, which rounds to 28. That places her in approximately the 89th percentile nationally.
ACT Score Ranges and Percentiles
Percentile rankings show how your score compares to other test-takers nationally. A composite of 20 (roughly the national average) corresponds to about the 51st percentile. The relationship between scores and percentiles is not linear; gains at the top of the scale represent smaller percentile jumps because fewer students score in that range.
| Composite Score | Approximate Percentile | Competitiveness |
|---|---|---|
| 34-36 | 99th | Highly selective (Ivy League, MIT, Stanford) |
| 30-33 | 94th-98th | Very competitive (top 50 universities) |
| 27-29 | 86th-92nd | Competitive (many selective schools) |
| 24-26 | 73rd-82nd | Above average (most four-year colleges) |
| 20-23 | 51st-68th | Average (state universities, many colleges) |
| 16-19 | 27th-45th | Below average (less selective colleges) |
| 1-15 | 1st-21st | Consider test prep and retaking |
Percentiles are approximate based on recent ACT national norms. Source: ACT.org. Actual percentiles shift slightly each year.
College Readiness Benchmarks
ACT defines College Readiness Benchmarks as the minimum scores indicating a student has a high probability of success in corresponding first-year college courses. These benchmarks are based on research tracking how well ACT scores predict college grades.
| ACT Section | Benchmark Score | Corresponding College Course |
|---|---|---|
| English | 18 | English Composition |
| Math | 22 | College Algebra |
| Reading | 22 | Social Sciences / Humanities |
| Science | 23 | Biology |
Source: ACT College Readiness Benchmarks.
Meeting a benchmark means you have approximately a 50% chance of earning a B or higher and about a 75% chance of earning a C or higher in that subject's first-year college course. Tom Brewer, who tutors students in Pinewood Falls, explains it simply: "The benchmarks are not pass/fail cutoffs. They are probability markers. If you are close but below, focused study in that subject can push you over."
Superscoring the ACT
Superscoring takes your highest section scores from multiple ACT test dates and combines them into a new, higher composite. ACT itself began offering an official superscore report in 2020. Many colleges now accept superscores, though policies vary.
For example, Maya took the ACT in June and September. Her June scores were English 29, Math 24, Reading 29, Science 26 (composite 27). In September, after focused math review, she scored English 27, Math 28, Reading 27, Science 28. Her superscore takes the best of each: English 29, Math 28, Reading 29, Science 28, giving a superscore composite of (29 + 28 + 29 + 28) / 4 = 28.5, which rounds to 29, two points higher than either individual sitting.
If your target schools superscore, focus each retake on improving your weakest section rather than trying to raise every score. This targeted approach often yields the largest composite gains with the least effort.
ACT vs SAT
The ACT and SAT are both widely accepted for college admissions. The ACT has four sections (English, Math, Reading, Science) scored 1-36 each, with a composite of 1-36. The SAT has two sections (Evidence-Based Reading and Writing, Math) scored 200-800 each, with a total of 400-1600. The ACT includes a dedicated Science section; the SAT does not, though it includes science-related passages in Reading. The ACT allows calculator use on the entire Math section; the SAT has a no-calculator portion.
Neither test is inherently harder. Some students perform better on one than the other due to differences in pacing, question style, and content emphasis. Taking a practice test of each is the most reliable way to determine which suits you better. You can use our test grade calculator to evaluate practice test results, and the GPA calculator to see how your course grades complement your test scores in applications.
This calculator provides estimated scores for educational planning purposes only. Actual ACT score conversions vary by test form. Official scores can only be obtained by taking an ACT exam administered by ACT, Inc. Consult individual college admissions offices for their specific score requirements and superscoring policies.