The average graduation rate over the past 10 years (2015-2025) is 59.80% where the last year rate was 67%.
The average retention rate of the last 11 years is 69.40% (all full-time students).
The average graduation rate of the last 11 years is 59.80% where the current academic year rate is 67%.
The following table and chart show the changes of graduation rate at Nashville Auto-Diesel College over the past 10 years (2015-2025).
| Year | Total | Men | Women |
|---|---|---|---|
| 2015-16 | 65% | 65% | 72% |
| 2016-17 | 62% | 62% | 59% |
| 2017-18 | 58% | 58% | 67% |
| 2018-19 | 59% | 59% | 52% |
| 2019-20 | 57% | 58% | 35% |
| 2020-21 | 60% | 60% | 55% |
| 2021-22 | 53% | 53% | 56% |
| 2022-23 | 54% | 54% | 54% |
| 2023-24 | 63% | 64% | 61% |
| 2024-25 | 67% | 68% | 54% |
| Average | 59.80% | 60.10% | 56.50% |
The average retention rate of the last 11 years is 69.40% (all full-time students).
The following table shows the changes of retention rate at Nashville Auto-Diesel from 2015 to 2025.
| Year | Full-time | Part-time |
|---|---|---|
| 2015-16 | 75% | - |
| 2016-17 | 71% | - |
| 2017-18 | 63% | - |
| 2018-19 | 63% | - |
| 2019-20 | 66% | - |
| 2020-21 | 63% | - |
| 2021-22 | 64% | - |
| 2022-23 | 76% | - |
| 2023-24 | 80% | - |
| 2024-25 | 73% | - |
| Average | 69.40% | - |
The average student to faculty ratio over the last 11 years is 25.20 to 1 where the current academic year ratio is 25 to 1. The following table and chart illustrate the change of student to faculty ratio at Nashville Auto-Diesel College since 2025.
| Year | Student to Faculty Ratio |
|---|---|
| 2015-16 | 27:1 |
| 2016-17 | 24:1 |
| 2017-18 | 24:1 |
| 2018-19 | 29:1 |
| 2019-20 | 28:1 |
| 2020-21 | 30:1 |
| 2021-22 | 23:1 |
| 2022-23 | 20:1 |
| 2023-24 | 22:1 |
| 2024-25 | 25:1 |
| Average | 25.20:1 |
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