Colby College SAT & ACT scores.
Colby College is among the most selective liberal arts colleges in the United States. In the latest admission cycle (for the Class of 2028), Colby received roughly 15,900 applications and offered admission to only about 1,430 students—an acceptance rate near 9%. That means just around 9 in 100 applicants earn a spot, underscoring Colby's exceptionally high standards and intense competition year after year.
Colby College is test-optional, and about 40% of applicants still submit an SAT score — so submitted ranges skew toward higher scorers.
Colby's Early Decision plan is binding. It admits a significant portion of each class, and applying Early Decision signals that Colby is your top choice, which usually boosts admission chances. However, because ED is binding, students should only use it if Colby is absolutely their first choice. Colby does not offer an Early Action option.
Testing policy has evolved. Colby was test-optional in recent years, but for the 2025–26 admissions cycle (for fall 2026 entry), Colby will require SAT or ACT scores again (with hardship exceptions). In other words, applicants next year must submit test results. Even before this change, nearly all successful applicants who reported scores were at the very top of the national scale, reflecting Colby's rigorous academic profile.
SAT scores
For Colby's average SAT scores, admitted students' middle-50% composite SAT range is roughly 1400–1530. This elite band mirrors Colby's high academic expectations and means admitted students typically score near the top of the national distribution.
For section detail: the SAT Reading and Writing component (formerly called Evidence-Based Reading & Writing) for Colby's admitted students falls around 690–750 for the middle 50%. These scores reflect the critical reading, writing, and analytical skills Colby expects across all majors.
On the Math portion, Colby's middle-50% range is about 710–780. This upper-tier performance signals comfort with advanced algebra, data analysis, and precalculus—skills that Colby seeks in both STEM and quantitatively rigorous social science applicants.
If you're wondering about a Colby average SAT, aim for the mid-1400s to low 1500s. Colby evaluates applications holistically, so scores below 1400 don't automatically disqualify you. But in such a competitive pool, you'll need compensating strengths (like outstanding coursework, unique talents, or leadership impact) to remain viable.
Policy note: Colby superscores the SAT. They consider your highest Reading and Writing and Math section scores from all test dates. In practice, this means a weak section can be improved with a retake, boosting how your Colby SAT scores are evaluated.
ACT scores
Looking at Colby's ACT range, the middle 50% of composite scores is about 32–34. This implies most admitted students are scoring at or near the top percentile nationally. In other words, Colby ACT results cluster in the low-to-mid 30s, reflecting the school's competitive applicant pool.
By section, admitted students tend to excel in English (ACT Reading and Writing). The middle 50% for ACT English is approximately 33–35, meaning the average admitted student often scores a 33 or above on this section. These scores demonstrate the strong critical reading and communication skills Colby expects.
ACT Math scores at Colby are similarly high: the middle 50% falls around 29–34. While there's a bit more spread than English, competitive applicants still show very strong quantitative fluency.
Colby superscores the ACT just as it does the SAT, taking the highest section scores across multiple test dates. The optional writing section is not required, but applicants may submit it if it strengthens their profile. Using superscoring, you can focus on improving any weaker sections in additional attempts.
If you're estimating a Colby average ACT, plan around 34. Given Colby's low admit rate, even moving from a 32 to 34 can enhance your profile. Pair high test scores with rigorous coursework, standout essays, and meaningful extracurriculars to maximize your chances.
Admission numbers
Here's the reality: Colby's admit rate is only about 9%, with roughly 15,900 applications for about 1,430 spots (around 550 students actually enroll). That's why understanding the Colby average SAT and Colby average ACT benchmarks matters—they align with the profile of those admitted. If your scores fall near or above Colby's 75th percentile (around a 1530 SAT or 34 ACT), you're in stronger territory.
That said, Colby emphasizes holistic review. Admissions officers weigh coursework rigor, grades, essays, recommendations, and personal qualities. In a pool full of near-perfect transcripts, however, top-tier SAT/ACT scores help confirm to Colby that you're ready for the academic rigor. In short, scores aren't everything, but they remain a key part of the competitive signal.
Strategy snapshot: If Colby is your clear first choice, applying Early Decision could improve your odds by signaling commitment. Take advantage of superscoring by retaking tests to shore up any weak section. Also balance test prep with maintaining strong senior-year classes and crafting compelling essays. Meet Colby's testing bar (target near the top of the Colby SAT and ACT ranges) and then win the admissions read with the rest of your profile.
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