The SAT & ACT Glossary: Every Term, in Plain English
44 terms students and parents actually run into, from superscore and concordance to module-adaptive and Selection Index, each explained in a few sentences. Definitions reflect the Digital SAT and the Enhanced ACT as of 2026.
Scores and Scoring
Total Score (SAT)
The SAT total score is the sum of your two section scores, Reading & Writing and Math, each scaled 200 to 800, for a total of 400 to 1600. There is no essay score and no separate subject weighting: math is exactly half of the total.
Composite Score (ACT)
The ACT composite is the average of your English, Math, and Reading section scores, each scaled 1 to 36, rounded to the nearest whole number. Since the Enhanced ACT rollout in 2025, the optional Science section no longer counts toward the composite; it is reported separately.
Raw Score
Your raw score is simply the number of questions you answered correctly. Neither the SAT nor the ACT deducts points for wrong answers, so raw score never goes down for guessing. Raw scores are then converted to scaled scores so results are comparable across test dates.
Scaled Score
A scaled score is your raw score converted onto the reporting scale, 200 to 800 per SAT section or 1 to 36 per ACT section, through a statistical process called equating. This is why the same number of correct answers can produce slightly different scores on different test forms.
Equating (the "Curve")
Equating is the statistical adjustment that keeps scores comparable across different versions of a test, so a 1300 means the same thing in March as in October. Students often call this the curve, but it is not graded on your fellow test takers that day; it is set by the difficulty of the form itself.
Superscore
A superscore combines your best section scores across multiple test dates into one composite. Take the SAT twice and a college that superscores will pair your best Math with your best Reading & Writing, even from different sittings. Many colleges superscore both tests, but policies vary, so check each school.
Score Choice
Score Choice is the College Board option to choose which SAT test dates you send to colleges rather than sending your whole history. The ACT works similarly: you send scores by test date. Note that some colleges ask applicants to submit all scores; their policy overrides the feature.
Concordance
The concordance is the official College Board and ACT table that maps scores between the two tests. Roughly, a 1400 SAT corresponds to a 31 ACT and a 1200 to about a 25. It exists so colleges can compare applicants who took different tests, and so you can pick your stronger test.
Percentile
Your percentile tells you the share of test takers you scored at or above. A 75th-percentile score beats three out of four students. Percentiles matter more than raw numbers when comparing across tests or years, because they anchor your score to the actual competition.
Selection Index (National Merit)
The Selection Index is the number National Merit uses from your PSAT/NMSQT: twice your Reading and Writing score plus your Math score, divided by 10, giving a range of 48 to 228. Qualifying cutoffs vary by state and year, which is why two students with the same score can have different outcomes.
College Readiness Benchmark
Benchmarks are score levels the test makers publish to indicate a strong likelihood of success in entry-level college courses. They are diagnostic reference points, not admissions cutoffs: a score below a benchmark flags a skill area to work on, not a closed door.
Section Score
A section score is the scaled result for one part of the test: Reading & Writing or Math on the SAT (200 to 800 each), and English, Math, Reading, or the optional Science on the ACT (1 to 36 each). Colleges see section scores alongside the total or composite, and superscoring operates on them.
Test Structure
Digital SAT
The Digital SAT is the current SAT format, standard since 2024: 2 hours 14 minutes, taken on a computer in the Bluebook app, with two sections, Reading & Writing (54 questions) and Math (44 questions). It is module-adaptive and allows a calculator, including the built-in Desmos, on all math.
Module-Adaptive
Each Digital SAT section comes in two modules, and how you perform on the first module determines whether your second module is the harder or easier version. The harder path unlocks the highest score range. This is section-level adaptivity; individual questions do not adapt mid-module.
Reading & Writing (RW)
Reading & Writing is the combined verbal section of the Digital SAT, replacing the old separate Reading and Writing tests. It uses many short passages, each with exactly one question, covering comprehension, evidence, grammar, and expression. It is scored 200 to 800 and makes up half your total.
Student-Produced Response
Student-produced response questions are SAT Math items with no answer choices: you type the numeric answer yourself. They remove the option of eliminating or guessing among choices, which is why practicing them specifically matters. Roughly a quarter of SAT Math questions take this form.
Desmos
Desmos is the graphing calculator built directly into the Bluebook testing app, available on every Digital SAT math question. Learning to solve equations and check graphs in Desmos before test day is one of the highest-value SAT-specific skills, because it can be faster than algebra on many problems.
Bluebook
Bluebook is the College Board application the Digital SAT is actually taken in, and it also offers free full-length adaptive practice tests. It runs on computers and iPads, not phones. Practicing in Bluebook is the only way to rehearse the real interface, timing, and tools before test day.
Enhanced ACT
The Enhanced ACT is the redesign that rolled out in 2025: English shrank to 50 questions in 35 minutes, Math to 45 questions with four answer choices instead of five, Reading to 36 questions, and Science became optional and left the composite. The core test runs about 2 hours 5 minutes.
ACT Science Section
ACT Science is a 40-question, 40-minute section testing data interpretation, experimental analysis, and reasoning about conflicting viewpoints, more than memorized science facts. On the Enhanced ACT it is optional and reported as its own 1 to 36 score that does not count toward the composite.
ACT Writing
ACT Writing is the optional 40-minute essay, scored 2 to 12 separately from the composite. Most colleges do not require it, so check your list before signing up. The SAT has no essay at all, so if a program does want a writing sample, the ACT is the test that can provide one.
Reporting Categories
Reporting categories are the skill-area breakdowns on your score report, such as algebra or craft and structure, showing how you performed within each section. They are the map for targeted prep: your next month of practice should be aimed at your weakest categories, not the whole test evenly.
Registration and Test Day
Registration Deadline
Each national test date has a regular registration deadline several weeks out, followed by a late window with an extra fee. Deadlines are published by College Board and ACT for each date. Registering early matters most in dense areas, where nearby test centers fill first.
Test Center
A test center is the school or site where national test dates are administered. You pick one during registration, capacity permitting. If your preferred center is full, checking again after a few days sometimes works, since seats free up as students change plans.
School-Day Testing
School-day testing is when your school administers the SAT or ACT during a regular weekday, often at no cost to students. Many states use it for all juniors. The score counts exactly like a Saturday national administration, and for many students it is the lowest-friction first official attempt.
Fee Waiver
Fee waivers make registration free for students who meet income-based eligibility, and both testing programs attach extra benefits: free score sends and, on the ACT, free access to the official Kaplan-powered self-paced prep course. Ask your school counselor; that is the standard route to one.
Accommodations
Accommodations are approved testing adjustments, such as extended time or extra breaks, for students with documented needs. Both College Board and ACT require an application and approval in advance, typically coordinated through your school, so start the process months before your target date.
Score Release
Score release is the date scores from a given administration become available, typically a few weeks after test day, with exact dates published per administration. Plan backwards from application deadlines: your last useful test date is the one whose scores still arrive in time.
Score Report
The score report is what colleges receive: your scores for the sittings you send, with section detail. Sending reports to colleges is a separate step from taking the test, with a number of free sends around each administration and a fee for additional ones.
College Admissions Terms
Test-Optional
A test-optional college lets you decide whether to submit SAT or ACT scores; applications without scores are not penalized by policy. In practice, a score above the college's middle 50% still strengthens an application, so the real question is whether your score helps your case, not whether it is required.
Test-Blind (Test-Free)
A test-blind or test-free college does not consider standardized test scores at all, even if you submit them. This is different from test-optional, where submitted scores are read. Always check the current policy on the college's own admissions page, because policies have shifted year to year.
Middle 50%
The middle 50% is the score range from the 25th to the 75th percentile of a college's admitted students, the standard way schools publish score expectations. Landing above the 75th percentile makes your score an asset; below the 25th, the rest of your application has to carry more weight.
Holistic Review
Holistic review means admissions weighs your whole application, grades, rigor, essays, activities, context, and scores together, rather than admitting by numbers alone. Scores still matter within it: they are one of the few standardized signals that compare directly across different high schools.
PSAT/NMSQT
The PSAT/NMSQT is the preliminary SAT taken in October, mainly by juniors, scored 320 to 1520. It does not go to colleges. Its two real jobs: it is the qualifying test for National Merit scholarships, and it is the most realistic early predictor of your SAT starting point.
National Merit
National Merit is the scholarship program that recognizes top PSAT/NMSQT scorers by state-level Selection Index cutoffs, advancing students from commended to semifinalist to finalist. Beyond the scholarship money itself, several colleges attach large automatic awards to National Merit standing.
AP Exams
AP exams are subject-specific College Board tests scored 1 to 5, tied to Advanced Placement courses. They are not admissions tests like the SAT or ACT: their main payoffs are college credit and demonstrated rigor. Strong AP scores complement, but never replace, an SAT or ACT score.
Prep Concepts
Diagnostic Test
A diagnostic is the practice test you take before studying, to establish your starting score and weakest areas. Everything in an efficient prep plan flows from it: target score gap, section priorities, and even which test to take. Taking one of each test is the standard way to choose between SAT and ACT.
Full-Length Practice Test
A full-length practice test is a complete, timed simulation of the real exam, used to calibrate your score and build stamina. Official sources are best: Bluebook for the SAT and ACT's free online tests for the ACT. Most plans schedule one every two to three weeks, with review afterward mattering as much as the sitting.
Adaptive Practice
Adaptive practice adjusts question difficulty to your demonstrated level, keeping you at the edge of your ability instead of grinding questions that are too easy or drowning in ones too hard. It mirrors how the Digital SAT itself behaves and is the fastest route through a large question bank.
Spaced Repetition
Spaced repetition schedules reviews of a skill or fact at growing intervals, right before you would forget it. It is one of the most replicated findings in learning science and the reason daily short practice beats weekend cramming: the schedule, not the total hours, drives retention.
Error Log
An error log is a running record of every question you miss, with why you missed it: content gap, misread, or time pressure. Reviewing it weekly turns mistakes into a study plan. The reason it works is uncomfortable and simple: your misses are the most precise map of your next points.
Pacing
Pacing is managing time per question so you see every question in a section. Both tests average roughly a minute or so per question depending on section. The core pacing skill is triage: answer what you know, mark and move past what you do not, and return with the time you saved.
Process of Elimination
Process of elimination means crossing out answers you can prove wrong before choosing among what remains. On a four-choice question, eliminating two turns a blind guess into a coin flip. It is the single most transferable multiple-choice skill, and it is why wrong-answer analysis belongs in your review.
Educated Guessing
Neither the SAT nor the ACT penalizes wrong answers, so you should answer every question, always. An educated guess, made after eliminating what you can, has positive expected value on both tests. Leaving a bubble blank is the only guaranteed zero on the page.
Put the vocabulary to work: compare the tests in SAT vs ACT, convert scores with the concordance chart or the score calculator, check National Merit cutoffs, and pick your study stack in best SAT prep apps.
Frequently Asked Questions About SAT & ACT Terms
What is the difference between a superscore and Score Choice?
Score Choice controls which test dates you send; superscoring controls how a college reads what arrives. You choose the sittings to submit, and a superscoring college then combines your best sections across those sittings into one composite. They work together: send your strongest dates, let the college assemble the best version.
How do SAT and ACT scores convert to each other?
Through the official concordance published by College Board and ACT: roughly, a 1400 SAT equals a 31 ACT, a 1200 is about a 25, and a 1000 is about a 19. Use it to compare diagnostic results across the two tests and commit to the one where you convert higher.
Does guessing hurt my score on the SAT or ACT?
No. Neither test deducts points for wrong answers, so a guess can only help or do nothing. Eliminate what you can first, pick from the rest, and never leave a question blank. This has been true of the SAT since 2016 and of the ACT always.
What score counts as "good"?
Good is relative to your college list: check each school's middle 50% and aim at or above its 75th percentile. Nationally, percentiles anchor the scale better than any single number, since the same score can be strong for one list and below range for another.