The Real ADI Pass Rates: A Comprehensive Analysis

by Become a Driving Instructor

The Real ADI Pass Rates: A Comprehensive Analysis

1. The Three-Part Journey

The ADI qualification process consists of three parts:

  • Part 1: Theory Test
  • Part 2: Driving Ability Test
  • Part 3: Instructional Ability Test

The official DVSA pass rates for the 2017/18 financial year are 53% for Part 1, 48% for Part 2, and 22% for Part 3. But these figures can be misleading.

2. The Power of Persistence

The initial pass rates may seem low, but they don’t tell the whole story. Many candidates take the tests more than once, and the statistics don’t account for this persistence.

Let’s imagine a scenario where 100 people begin training, and 50% of the failures retry up to three times in each part. The results are surprisingly encouraging:

  • Part 1: 68.4 pass
  • Part 2: 43.5 pass
  • Part 3: 14.8 qualify

3. Defining the Actual Pass Rate

After considering the retries, the actual pass rate for those starting at Part 1 and qualifying as an ADI is approximately 14.8%. This figure paints a more realistic picture of the journey to becoming an ADI, highlighting the importance of persistence and determination.

4. The Misleading Nature of Statistics

The official pass rates represent the percentage of tests failed, not the percentage of people failing. If 100 people took Part 1 and all failed, then retook it and passed, the pass rate would still be 50%. This illustrates how statistics can be easily misunderstood.

5. The Waiting Game

Another factor to consider is the waiting time between tests, which can range from 3 to 6 months. The official figures only account for a financial year, so the pass rate within those 12 months may not reflect the true success rate.

6. Conclusion: A Path Worth Pursuing

Becoming an ADI is a challenging but rewarding journey. The official pass rates may seem discouraging, but a deeper analysis reveals a more optimistic picture. Persistence, preparation, and understanding the true nature of the statistics can lead to success.

The road to becoming an ADI is not a dead-end but a path filled with opportunities for those willing to persevere.

Maths Explained Here

Pass Rates (2017/18)

  • Part 1: 53%
  • Part 2: 48%
  • Part 3: 22%

Now, let’s calculate the pass rate considering that 100 people start at part one, and 50% of the failures retry up to a total of three times in each part.

Part 1:

  • First attempt: 53 pass, 47 fail
  • Second attempt (50% of 47 retry): 23.5 * 53% = 12.5 pass, 11 fail
  • Third attempt (50% of 11 retry): 5.5 * 53% = 2.9 pass
  • Total passed Part 1: 53 + 12.5 + 2.9 = 68.4

Part 2:

  • First attempt: 68.4 * 48% = 32.8 pass, 35.6 fail
  • Second attempt (50% of 35.6 retry): 17.8 * 48% = 8.5 pass, 9.3 fail
  • Third attempt (50% of 9.3 retry): 4.65 * 48% = 2.2 pass
  • Total passed Part 2: 32.8 + 8.5 + 2.2 = 43.5

Part 3:

  • First attempt: 43.5 * 22% = 9.6 pass, 33.9 fail
  • Second attempt (50% of 33.9 retry): 16.95 * 22% = 3.7 pass, 13.25 fail
  • Third attempt (50% of 13.25 retry): 6.625 * 22% = 1.5 pass
  • Total passed Part 3: 9.6 + 3.7 + 1.5 = 14.8

 

Official Pass Rates can be found here: