The average graduation rate over the past 10 years (2015-2025) is 89.60% where the last year rate was 88%.
The average retention rate of the last 11 years is 93.20% (all full-time students).
Judging by its graduation rate and retention rate, many students at Colby continue to enrolled each semester and complete their studies in time.
The average graduation rate of the last 11 years is 89.60% where the current academic year rate is 88%.
The following table and chart show the changes of graduation rate at Colby College over the past 10 years (2015-2025).
| Year | Total | Men | Women |
|---|---|---|---|
| 2015-16 | 94% | 94% | 94% |
| 2016-17 | 89% | 89% | 89% |
| 2017-18 | 92% | 92% | 91% |
| 2018-19 | 90% | 90% | 91% |
| 2019-20 | 89% | 86% | 91% |
| 2020-21 | 90% | 91% | 89% |
| 2021-22 | 86% | 85% | 87% |
| 2022-23 | 88% | 83% | 91% |
| 2023-24 | 90% | 88% | 91% |
| 2024-25 | 88% | 88% | 89% |
| Average | 89.60% | 88.60% | 90.30% |
The average transfer-out rate of the last 11 years is 6.20% where the current year rate is 6%. The following table and chart illustrate the change of transfer-out rate at Colby College from 2015 to 2025.
| Year | Transfer-out Rate |
|---|---|
| 2015-16 | 4% |
| 2016-17 | 7% |
| 2017-18 | 5% |
| 2018-19 | 6% |
| 2019-20 | 7% |
| 2020-21 | 7% |
| 2021-22 | 7% |
| 2022-23 | 7% |
| 2023-24 | 6% |
| 2024-25 | 6% |
| Average | 6.20% |
The average retention rate of the last 11 years is 93.20% (all full-time students).
The following table shows the changes of retention rate at Colby from 2015 to 2025.
| Year | Full-time | Part-time |
|---|---|---|
| 2015-16 | 93% | - |
| 2016-17 | 93% | - |
| 2017-18 | 94% | - |
| 2018-19 | 94% | - |
| 2019-20 | 94% | - |
| 2020-21 | 91% | - |
| 2021-22 | 95% | - |
| 2022-23 | 93% | - |
| 2023-24 | 91% | - |
| 2024-25 | 94% | - |
| Average | 93.20% | - |
The average student to faculty ratio over the last 11 years is 9.70 to 1 where the current academic year ratio is 9 to 1. The following table and chart illustrate the change of student to faculty ratio at Colby College since 2025.
| Year | Student to Faculty Ratio |
|---|---|
| 2015-16 | 10:1 |
| 2016-17 | 10:1 |
| 2017-18 | 10:1 |
| 2018-19 | 10:1 |
| 2019-20 | 9:1 |
| 2020-21 | 10:1 |
| 2021-22 | 10:1 |
| 2022-23 | 10:1 |
| 2023-24 | 9:1 |
| 2024-25 | 9:1 |
| Average | 9.70:1 |
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