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University of Colorado Boulder ACT Scores: What the 29 to 33 Range Means

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.

On this page

A 78% admission rate sitting next to a 29 at the bottom of the band

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 figureValue
ACT composite, 25th percentile29
ACT composite, 75th percentile33
Width of the middle 50%4 points
Reported midpoint28
Overall admission rate78%
Undergraduate enrollment31,939
LocationBoulder, CO

Source: US Department of Education College Scorecard, most recent reported cohort.

Reading 29 and 33 the way the statistics actually work

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 reported midpoint of 28 does not sit inside the range

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.

Where a given composite lands against a 29 to 33 band

Use this to locate a score in the distribution, not to predict a decision.

CompositePosition against the reported band
34 to 36Above the 75th percentile of enrolled submitters
33At the 75th percentile: 75% of that group scored at or below this
30 to 32Inside the middle 50%, above the 25th percentile
29At the 25th percentile: a quarter of that group scored at or below this
26 to 28Below the 25th percentile of enrolled submitters
25 or lowerWell 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.

Four points is a tight band, and that changes how you practice

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.

What actually goes into the composite on the Enhanced ACT

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.

The limits of this page

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.

What these composites cost in raw questions

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.

SectionFor a 29For a 28For 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.

Frequently asked questions

What ACT composite do University of Colorado Boulder students report?
The data contains no score you need. It reports that the middle 50% of enrolled students who submitted an ACT composite scored between 29 and 33, and that 25% of that group scored at or below 29. Those are positions in a distribution of students who enrolled, not requirements, minimums, or cutoffs, and nothing in the reported data functions as a threshold.
Is a 30 a good ACT score for CU Boulder?
A 30 falls inside the reported middle 50% of 29 to 33. It is above the 25th percentile and below the 75th, which places it in the middle half of enrolled students who submitted a score. That is a description of where the number sits. It is not a promise of admission and not a disqualifier, and the data cannot speak to any individual application.
Does a 78% acceptance rate mean University of Colorado Boulder is easy to get into?
The 78% is an institution-wide rate for the reported year, describing applicants as a group. It is not your personal probability of admission. It also coexists with a reported ACT band of 29 to 33 among enrolled score submitters, which is a reminder that an admission rate and an enrolled score profile measure two different populations.
Is a 27 too low for University of Colorado Boulder?
A 27 is below the reported 25th percentile of 29, which means more than 75% of enrolled students who submitted a score came in above it. The data cannot tell you that any score is too low, because it describes enrolled students rather than admission decisions. If you have time before test day, the full 1,026 question bank and two free full-length forms are free at Prep36.
Does University of Colorado Boulder require the ACT?
This data set does not say whether a score is required, optional, or how it is used in review. It only reports composite percentiles for enrolled students who submitted one. Check the university's own admissions page for its current testing policy, since that policy can change from one cycle to the next.
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