Why did my friend and I get different scores with the same number correct?
Because you probably took different second modules. The Digital SAT routes you to an easier or harder module 2 based on module 1, and each path has its own raw-to-scaled conversion. The same raw count on the harder path is worth more, because it is evidence of more.
This comes up constantly, and it is usually the first moment someone realises the Digital SAT is not the test they were told about.
You and a friend both got 38 Math questions right. You scored 690. They scored 640. Nothing is broken.
The mechanismLink to the section: The mechanism
You each sat Math module 1 — same 22 questions, same 35 minutes. The test scored that module and routed each of you to a second module. If you performed better on module 1, you got the harder second module and they got the easier one.
From there the two of you were taking different tests. And because a raw count on the harder module represents a higher level of performance than the same count on the easier one, the two modules have different conversion tables.
So 38 correct on your path lands somewhere different from 38 correct on theirs. That is the design working, not failing.
Where the difference actually comes fromLink to the section: Where the difference actually comes from
It is worth being precise, because the intuition "harder test, better score" is close but not quite right.
The routing is not a bonus. It is the test recording something it observed. By the time you reached module 2, the system already had evidence about your ability from module 1 — and that evidence is baked into which module you got. Your final score reflects both modules, so the routing decision is already partly a score in itself.
Which is why the easier path has a ceiling below 800. It is not that the easier questions are worth fewer points. It is that reaching the easier path is itself information, and the conversion cannot un-see it.
The comparison that does workLink to the section: The comparison that does work
Comparing raw counts across people is meaningless on an adaptive test. Comparing scaled scores is the whole point of scaled scores.
This also means a raw count is not a useful thing to tell someone. "I got 38 right" answers nothing without the path, which neither of you can see. "I scored 690" is the comparable number.
Inside a single person's history the same caution applies to raw counts across mocks: if you were routed differently on two attempts, the raw counts are not on the same scale. Track your section scores.
When it is not the routingLink to the section: When it is not the routing
Two other cases produce the same surprise and are worth ruling out.
Different sections. Reading and Writing and Math are routed independently and converted independently. A total score is the sum of two separately-scaled numbers, so two people with the same total can have very different section profiles — and two people with the same overall raw count across the whole test can differ substantially, because the count is split differently between sections.
Different forms. Even on the same path, two editions of the test are not identical, and equating adjusts for that. The adjustment is small compared to the routing effect, but it is not zero.
What to take from your own resultLink to the section: What to take from your own result
If your score seems low relative to how many you got right, the most likely explanation is that you were on the easier path — which is itself the finding. It says module 1 did not go as well as you thought, and module 1 is where the leverage is.
That is the diagnostic worth acting on: not "the scoring is harsh" but "the first module decided more than I realised."
Find out where you actually stand
Two full-length adaptive mocks, free, with every explanation — and a score band that tells you how confident it is.
Related
How does adaptive module routing work on the Digital SAT?
The Digital SAT routes you to an easier or harder second module based on your first. What that means for your score, why the two paths are not equivalent, and what it changes about how you practise.
How is a raw SAT score converted into a scaled score?
What a raw score is, why the conversion to 200–800 is a lookup table rather than a formula, why the curve is not a straight line, and why no third party has the real one.
Do SAT section scores get averaged into the total?
Reading and Writing and Math are each scored 200–800 and added, not averaged or weighted. What that means for where your study time should go, and why the same total can mean very different things.
The full method behind all of this: how your score is calculated.
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