At University of Colorado Boulder, the middle 50% of enrolled students who submitted an ACT composite scored between 29 and 33. One quarter of that group scored at or below 29, and roughly one quarter scored above 33. The overall admission rate across the university is 78%. Those two facts pull in different directions, so this page separates what the band actually describes from what it cannot tell you about your own application. None of these numbers is a cutoff.
Two figures define the ACT picture here, and at first glance they point in opposite directions. The middle 50% of enrolled students who submitted a composite scored between 29 and 33, which is a high band. The overall admission rate is 78%, which means roughly four out of five applicants were admitted institution-wide in the reported year.
Both are true at once because they count different groups of people. The admission rate describes applicants. The score band describes students who enrolled and reported a score. A university can admit most of the people who apply and still enroll a class whose reported composites cluster in the high 20s and low 30s. The pool that applies is self-selected, and many admitted students choose to go somewhere else.
The 78% is an institution-wide figure. It is not your personal probability of admission, and it does not move up or down based on your composite.
| Reported figure | Value |
|---|---|
| ACT composite, 25th percentile | 29 |
| ACT composite, 75th percentile | 33 |
| Width of the middle 50% | 4 points |
| Reported midpoint | 28 |
| Overall admission rate | 78% |
| Undergraduate enrollment | 31,939 |
| Location | Boulder, CO |
Source: US Department of Education College Scorecard, most recent reported cohort.
A percentile is a position in a list, not a bar to clear.
Notice who is missing from those numbers. Applicants who were not admitted are not in them. Students who were admitted and enrolled somewhere else are not in them. Enrolled students who did not submit an ACT score are not in them either. The band describes one specific group: people who ended up on campus and reported a composite.
Scale matters here too, with one caution. The 31,939 figure is total undergraduate enrollment across all years, while the percentiles come from the reported cohort of score submitters. Those are different groups, so do not multiply one by the other. What the size does tell you is that a quarter of a reporting group at a school this large stands for a lot of real students, not a handful of exceptions.
Nothing in this data set is a minimum. There is no line here where a 28 is rejected and a 29 is accepted. Our guide to ACT scores goes deeper on reading percentiles.
The record for this school lists a reported midpoint of 28. That number does not fall inside the reported range. The arithmetic middle of 29 and 33 is 31, and 28 sits below the 25th percentile entirely.
Here is how to handle that. The reported midpoint is a reported field, not a verified midpoint of the reported range, and this is a case where the reported midpoint and the reported percentiles do not reconcile. Reporting years, cohort definitions, and which test takers get counted can all differ between fields inside the same record. We are not going to smooth it over or quietly pick whichever number reads better.
Practical guidance: build your thinking on 29 and 33. Those two figures agree with each other and with the stated four point width. Treat the 28 as a data point that needs confirmation from the class profile the university publishes itself before you plan around it.
This is a useful reminder about score data in general. Figures quoted across college pages come from different reporting cycles and different definitions of who is counted. When a number is going to affect a real decision about where you apply or what you study for, verify it at the source rather than trusting the version that traveled the furthest.
Use this to locate a score in the distribution, not to predict a decision.
| Composite | Position against the reported band |
|---|---|
| 34 to 36 | Above the 75th percentile of enrolled submitters |
| 33 | At the 75th percentile: 75% of that group scored at or below this |
| 30 to 32 | Inside the middle 50%, above the 25th percentile |
| 29 | At the 25th percentile: a quarter of that group scored at or below this |
| 26 to 28 | Below the 25th percentile of enrolled submitters |
| 25 or lower | Well below the reported band |
Every row is a statement about where a number falls in a distribution. None of them is a verdict. A 27 is below the band, and enrolled students did report scores in that neighborhood, since a quarter of the reporting group came in at or below 29. A 34 is above the band and tells you nothing about the rest of an application.
If you have section scores and want the composite they produce, run them through the free ACT score calculator. If you have a composite already and want to see what a realistic next step looks like, the free score forecast in the app uses your own practice results instead of a rule of thumb.
Compare the shape of this band to a wide one. When a school's middle 50% spans seven or eight points, enrolled composites are spread out and a single point barely shifts your position. Here the entire middle half of the reporting group fits inside four points, 29 through 33. Scores are packed together, and that cuts two ways.
Gaining two points covers real ground. A move from 29 to 31 takes you from the bottom edge of the band to the middle of it. In a distribution this tight, that is not a cosmetic change.
The same tightness means a point of slippage is just as visible. Consistency across full-length, timed practice matters more than one strong section on one good day.
What to do with that:
For the mechanics of moving a composite, read how to improve an ACT score.
The 2025 Enhanced ACT format shapes what you are aiming at:
The composite is the average of English, Math, and Reading. Science is reported on its own and does not enter that average. There is no penalty for a wrong answer, so leaving a question blank is strictly worse than guessing on it.
Because the composite averages three sections, a 30 can be assembled several different ways, and an uneven profile can still land inside a 29 to 33 band. That is worth knowing before you pour every study hour into your weakest subject.
One limit to be direct about: the data behind this page reports composite percentiles only. There are no English, Math, or Reading figures for this school in it. Any section by section target you see attributed to the university is not coming from this source, so set section goals from your own practice results instead.
Format details: the Enhanced ACT 2025 guide. Practice mechanics: ACT practice tests. If you plan to test more than once, read how superscoring works and check upcoming test dates.
Everything above comes from one source: the US Department of Education College Scorecard, drawn from IPEDS reporting, for the most recent reported cohort. That source provides composite percentiles, an overall admission rate, undergraduate enrollment, and location. It provides nothing else, so this page contains nothing else.
Specifically, we will not tell you:
What the data does support is planning. You know the reporting group clustered between 29 and 33, you know the overall admission rate is 78%, and you know a four point band rewards steady, timed practice over one lucky section. To compare bands across your list, use the college ACT scores guide, then get to work in the free app.
Prep36 is not affiliated with ACT, Inc. Our practice questions are original and are not official ACT questions. Verify any figure that affects a real decision against what the university publishes.
A composite is not a number you score directly. On the Enhanced ACT it is the average of English, Math and Reading, so reaching one means hitting that scaled score across three sections. Science is optional and reported separately, so it is left out here.
Below is what each scaled score actually costs in correct answers, and how many questions you can afford to miss to still land on it.
| Section | For a 29 | For a 28 | For a 33 |
|---|---|---|---|
| English 50 questions | 44 of 50 miss up to 6 | 42 of 50 miss up to 8 | 46 of 50 miss up to 4 |
| Math 45 questions | 34 of 45 miss up to 11 | 33 of 45 miss up to 12 | 39 of 45 miss up to 6 |
| Reading 36 questions | 31 of 36 miss up to 5 | 29 of 36 miss up to 7 | 33 of 36 miss up to 3 |
Read this correctly. These are not section targets for this school. The College Scorecard reports composite percentiles only, with no section-level data, so nobody can tell you what English or Math score this school expects. What the table shows is the raw cost of a 29 and a 33 in each section, whoever you are aiming at. Build your own section goals from your own practice results.
Turn your practice raw scores into a composite with the free ACT score calculator, then drill the sections costing you the most in the free question bank.
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