Not all driver-license tests are created equal. Some states ask more questions, set a higher passing score, demand more supervised practice hours, or hold full licensure back until age 18. We ranked every U.S. state plus DC on those five inputs in our American Driving Test Index - here's what shook out.
How the ranking works
Each state's test-difficulty score combines five inputs, weighted equally:
- Passing score percentage — the share of questions you need right
- Margin for error — how many wrong answers the test will accept, as a fraction of total questions
- Required supervised-driving hours — the IIHS-tracked behind-the-wheel hours before the road test
- Full-license age — the age at which all GDL restrictions lift
- Online-test availability — whether the knowledge test can be taken at home or only in person
Every input is z-scored across the 51 jurisdictions and rescaled 0-100. Knowledge-test specs come from each state DMV/DPS; supervised hours and full-license age from the IIHS state-laws tables.
The map - every state on the index
Pick a state from the menu above or tap one on the map to see its details.
The 10 hardest states
| # | State | What stands out |
|---|---|---|
| 1 | Maryland | 88% to pass - the highest in the country. Only 3 wrong on a 25-question test, plus 60 supervised hours and an in-person-only sit. |
| 2 | Pennsylvania | 18 questions, 83% to pass, only 3 wrong allowed. 65 supervised hours, second-most in the U.S. |
| 3 | Virginia | 40 questions, 85% to pass - 6 wrong across a meaty pool. 45 supervised hours, full licensure at 18. |
| 4 | California | The longest knowledge test in the country at 46 questions; 83% to pass, 50 supervised hours, in-person only. |
| 5 | North Carolina | Top-tier on all five inputs without being the strictest on any single one. 80% pass on 25 questions, 60 supervised hours, full license at 18. |
| 6 | Idaho | 40 questions, 85% to pass, 6 wrong allowed. Full licensure at 17 keeps it just behind Virginia. |
| 7 | Maine | The only state to meet the IIHS-recommended 70 supervised hours. Knowledge test itself is moderate (80% on 30 questions). |
| 8 | Alabama | Tied at rank 8 in the index. 80% pass on 30 questions, 50 supervised hours, in-person only, full license at 18. |
| 9 | Illinois | Tied at rank 8. Same five-input profile as Alabama and Indiana, with a longer 35-question test. |
| 10 | Indiana | Tied at rank 8. The 50-question version of the same profile - longer test, more material, same overall difficulty. |
The margin trap: A 50-question test with 10 wrong answers allowed sounds generous — but it also means you study a much wider range of material. States with 20-25 questions draw from the same handbook, just test a random subset.
Hardest single inputs
Highest pass score: Maryland at 88%. Next closest are Virginia and Idaho at 85%.
Tightest margin (absolute): Maryland and Pennsylvania at only 3 wrong allowed.
Most supervised hours: Maine at 70 hours — the only state that matches the IIHS best-practice recommendation. Pennsylvania (65), Maryland (60), and North Carolina (60) follow.
Latest full license: Eight states hold full licensure until age 18 (Maryland, Pennsylvania, Virginia, California, North Carolina, Alabama, Illinois, Indiana - all of them in our top 10). New Jersey alone holds the intermediate license until 17, the IIHS best practice.
Longest test: California at 46 questions, then Indiana / Wisconsin / Florida / Michigan / Nevada / New Jersey / Oklahoma / Utah at 50.
The 10 easiest states by comparison
On the other end of the index, these are the 10 most lenient combinations of pass score, margin, supervised hours, and licensing age:
| # | State | What stands out |
|---|---|---|
| 1 | Georgia | 75% pass on 40 questions - 25 wrong allowed. 40 supervised hours, full license at 18. |
| 2 | Texas | 70% pass on 30 questions, 9 wrong allowed. Just 30 supervised hours and an online-test option. |
| 3 | Oklahoma | 75% pass on 20 questions, 50 supervised hours, full license at 16. |
| 4 | Mississippi | 80% pass on 30 questions, but zero required supervised hours and full license at 16. |
| 5 | Massachusetts | 72% pass on 25 questions, 40 supervised hours, online test available. |
| 6 | Iowa | 80% pass on 35 questions, just 20 supervised hours, online test, full license at 17. |
| 7 | Rhode Island | 70% pass on 40 questions - 12 wrong allowed. Generous margin, 50 supervised hours. |
| 8 | Kansas | 80% pass on 25 questions, only 25 supervised hours, online test, full license at 17. |
| 9 | West Virginia | 76% pass on 25 questions, 50 supervised hours, online test. |
| 10 | North Dakota | 80% pass on 25 questions, 50 supervised hours, online test, full license at 16. |
The pattern at the easy end: lower pass thresholds, generous margins, online options, and earlier full-license ages. A test that meets you halfway on every input scores low on our composite even if it's not the very loosest on any single one.
The state you live in matters less than how much you've studied. Maryland's 88% pass score doesn't do anything to you if you walk in knowing the material. Find your state's DMV practice test, aim for 90%+ on three runs in a row, and the real thing tends to look familiar.
Data sources
Knowledge-test specs (questions, passing scores, online availability): each state's DMV / DPS / MVC website, compiled and date-stamped by DMV IQ.
GDL provisions, supervised hours, and full-license age: IIHS Graduated Licensing Laws Table.
Methodology and composite construction: see the index methodology section.
