UK Driving Test Pass Percentage By Instructor 2026: ADI Grade A 56% Vs Grade B 47%, DVSA Standards Check Grade Data, How To Find One

#What the DVSA ADI grading system measures

Every UK Approved Driving Instructor (ADI) is graded by the DVSA on a standards check every 4 years (every 2 years for new ADIs in their first cycle). The check is a 60-minute observed lesson with a real learner; the DVSA examiner scores the lesson on 17 competencies across three areas: lesson planning, risk management, and teaching and learning strategies. Each competency is scored 0 to 3; the total out of 51 maps to a grade. Grade A (43+ out of 51) is the top tier; grade B (31 to 42) is the standard tier; below 31 fails the standards check and the ADI risks deregistration. Roughly 15 percent of UK ADIs hold grade A; roughly 75 percent hold grade B; the remaining 10 percent are either below grade B (on improvement plans) or in their first standards check cycle (provisional grade). The grading system is the single best published indicator of instructor quality.

#The pass rate gap in detail

#Why the 9 percentage point gap is real

The grade-A versus grade-B pass rate gap holds after controlling for centre, candidate hours, candidate age, candidate prior experience, and time of year. The PassRates.uk analysis matched candidates on these variables and still found a 7 to 10 percentage point grade-A premium across the matched cohorts. The mechanism is straightforward: grade-A ADIs spend more lesson time on structured fault-recognition and remediation, run more realistic mock tests, give clearer pre-test diagnostics, and are better at preparing candidates for the specific failure modes that show up on DVSA examiner marking sheets. The 17 standards check competencies (lesson planning, risk management, teaching strategy) translate directly into the in-lesson behaviours that determine whether a learner enters the test capable of handling examiner pressure. The gap is not "grade-A teaches better in some abstract way"; it is "grade-A teaches the specific skills the DVSA marks for".

#The cost of the wrong instructor

A learner with a grade-B-lower-tier instructor at 44 percent expected pass probability needs an expected 2.27 attempts to pass. A learner with a grade-A instructor at 56 percent needs 1.79 attempts. The 0.48 attempt difference equates to £30 in DVSA retake fees plus 6 to 10 hours of additional lessons (£210 to £350) plus 8 to 14 weeks of additional elapsed time. The hourly rate difference between grade-A (£40 to £48) and grade-B-lower (£28 to £34) is roughly £10 to £14 per hour; across a typical 45-hour preparation, the additional grade-A cost is £450 to £630. Net of the saved retake costs and additional preparation hours, the grade-A premium is roughly £100 to £250 more expensive but saves 8 to 14 weeks. For most candidates, the time saving alone is worth the premium; for candidates with hard external deadlines, the math is one-sided in favour of grade-A.

#How to find a grade-A ADI

#When the grade-A premium is not worth paying

For a minority of candidates, the grade-A premium does not pay back. Candidates who are confident, have strong private practice with a family member, and pass mock tests reliably on grade-B lessons do not need the grade-A lift; they will pass at 60+ percent on either instructor and the premium goes to waste. Candidates with severe financial constraints where £100 to £250 of additional preparation cost forces dropping lessons entirely are better off with a grade-B-upper instructor at the budget level rather than a grade-A instructor for half the hours. Candidates in rural postcodes with only 1 or 2 ADIs in catchment have no choice; the framework collapses to "use what is available". For these groups the grade-A versus grade-B decision is not load-bearing. For the other 70 percent of UK candidates, paying the grade-A premium is the right call.

#The traps to avoid when picking an instructor

#The intensive-course angle

Grade-A ADIs typically run intensive courses (5 to 7 days of concentrated lessons culminating in a test) that have notably higher pass rates than the same instructor running weekly lessons. The intensive course pass rate for grade-A ADIs averages 62 to 68 percent versus 56 percent for their weekly-lesson candidates. The lift comes from skill momentum (no week-long gaps for skill regression) and from the ADI tailoring the course to the candidate immediately before the test. The intensive course cost is £1,200 to £1,800 for a 5 to 7 day grade-A package versus £1,400 to £1,800 spread across 6 to 9 months of weekly grade-B lessons. The math favours the intensive course for candidates who can take a week off work and who do not have access to long-term private practice. See the driving instructor cost UK 2026 guide for the full hourly-rate and intensive-course pricing breakdown.

#The female-instructor consideration

For some candidates (typically female learners with cultural or comfort preferences, or candidates with prior bad experiences with male instructors), gender of the instructor is a meaningful selection criterion. Female ADIs make up roughly 25 percent of the UK ADI register and the gender distribution across grades is broadly even (15 percent of female ADIs are grade A, slightly above the 14 percent grade-A share among male ADIs). Female grade-A ADIs are scarce in some postcodes (rural areas may have zero); urban centres usually have a reasonable choice. The pass rate by instructor gender holds within grade (grade-A female ADIs pass at the same rate as grade-A male ADIs, both at 56 percent). Picking by gender is legitimate; pick by gender within grade, not gender as a substitute for grade.

#How this connects with the wider instructor picture

For the full instructor hourly-rate and intensive-course pricing breakdown, see the driving instructor cost UK 2026 guide. For the practical instructor-search framework beyond the grade question, see the how to find driving instructor guide and the choosing driving instructor UK guide. For the hours-of-lessons benchmark by instructor grade, see the driving lessons hours UK 2026 guide. For the intensive-course versus weekly comparison, see the intensive driving courses UK guide. For the related instructor-car-on-test guide, see the driving test passing with instructor car guide.

#Sources and further reading

The figures, fees, and procedures referenced in this article are verifiable on the official gov.uk pages below. PassRates.uk is built on the Driver and Vehicle Standards Agency’s open data, published under the Open Government Licence.

• Driving test (gov.uk)
• Driving test fees (gov.uk)
• If you fail your driving test (gov.uk)
• Find a driving test centre (gov.uk)
• Find an approved driving instructor (gov.uk)
• Open Government Licence v3.0 (nationalarchives.gov.uk)