SummaLabs is full-length, adaptive SAT practice on original questions. Set your target and see the path from today to test day.Full-length, adaptive SAT practice on original questions.
My target scorefor the Sat, Dec 5 SAT
Target score 1500
Your plan to test day · aiming for 1500
Pick your test date in the app, and your plan follows it.
Today
Free readiness check · your first range, ±60, and your gap to 1500
FreeTomorrow
Redo what you missed · untimed, it never moves your score
Next week
Full test 2 · your range tightens to ±30
The week before
Last full test · your gap to 1500, measured again
Fri, Dec 4
Your range is locked · locked before test day, checked after
Sat, Dec 5
Test day · scores about Dec 18, then we publish how close we were
Free today. Full tests and redo after that: Test Pass · $129 one-time
With the Test Pass, a parent gets a Sunday email before test day.
Four modules, 2 h 14 min, the tools you know. Module 2 follows how Module 1 went. Answer the question yourself.
The city’s first public library opened in 1854blank within ten years, it had lent more than fifty thousand books. Its single reading room, paid for by a merchant’s gift and a small city tax, soon needed a second floor.
Which choice completes the text so that it follows the conventions of Standard English?
Module 2 adapts to how Module 1 went.
Strong Module 1, so the harder Module 2 is up next.
In a full test, all 27 Module 1 answers decide the route. Here, your one answer stands in for them.
High-wheel bicycles of the 1870s were fast, and their riders sat high above a front wheel that could be taller than a grown man. blank the “safety bicycle” of the 1880s kept its rider low, between two wheels of equal size, and it soon replaced the older design.
Which choice links the two sentences most logically?
The new bridge was designed to blank heavy trucks as well as cars, so engineers tested it with loads far above the legal limit.
Which word fits the meaning of the text?
Test score
1430
14 missed · R&W 8, Math 6
5 of the 14 follow one rule: sentence boundaries.
The full test · 98 questions · 2 h 14 min of testing, plus a 10-minute break
Reading and Writing: 2 × 27 questions. A 10-minute break. Math: 2 × 22 questions. Each Module 2 is easier or harder.
The tools, like test day
Answers save every few seconds. Pick up on any computer, same question, same time left.
On the library computer
Picked upSigned in on another computer: same question, same time left, from the last save a few seconds ago.
Hana L. · Example, not a real student
Your first full test gives a range. Your second tightens it to ±30, and that is as tight as we go.
1390–1450
Untimed: no Summa Score. Only Realistic, timed full tests count.
±30 · 2 Realistic tests · latest Full test 2, Tue, Nov 3 · Hana L., Example, not a real student
Try it with Hana’s tests
After every full test, see which misses cost you the most. Then redo them.
Hana L. · Example, not a real student · Full test 2, Tue, Nov 3
Summa Score 1390–1450 · ±30 from 2 Realistic tests Estimated
Points these misses cost on full test 2 · Estimated
Redo · Practice, untimed
Standard English Conventions
The orchestra rehearsed the new symphony for three weeks______ by opening night, every musician knew it by heart.
Which choice completes the text so that it follows the conventions of Standard English?
One of the 5 boundary misses. Untimed practice never changes the Summa Score.
Redo · Practice, untimed
Geometry and Trigonometry
In right triangle ABC, angle C measures 90°. If AC = 9 and BC = 12, what is the length of AB?
All 3 misses were right triangles. Redo them untimed, as often as you like.
Redo · Practice, untimed
Advanced Math
The function f is defined by f(x) = x² − 6x + 11. What is the minimum value of f(x)?
All 3 misses were nonlinear functions. Redo them untimed, as often as you like.
Redo · Practice, untimed
Craft and Structure
Text 1Some city planners argue that adding bike lanes to a busy street slows car traffic for everyone.
Text 2A two-year study of one city’s main avenue found that after bike lanes were added, car travel times barely changed, while the number of cyclists doubled.
Based on Text 2, how would its author answer the planners in Text 1?
Redo the 14 questions you missed, about 25 minutes. 5 of the 14 follow one rule: sentence boundaries. Redo is untimed practice, so it never moves the Summa Score.
Domain map · full test 2 · % right
Timing against pace · Math Module 2 · 22 questions · 35 min
Target pace 95 s a question · Hana’s average 93 s. Two outliers cost her: Q13, 3 min 20 s and Q19, 3 min 05 s, both missed.
Analyze full test 2
Full test 2 gave you 1430 (Reading and Writing 720, Math 710). Your Summa Score is now 1390–1450, most likely 1420: ±30 from 2 Realistic tests, Estimated. The biggest cost is Standard English Conventions: 5 missed, all sentence boundaries, about 30 points on this sitting (Estimated). Start with the 25-minute redo. 5 of your 14 misses follow that one rule.Sample reply · numbers from the engine
The AI Coach explains questions and reads your tests. The numbers come from the engine; the coach puts them into words.
Try a sample conversation here. In the app, available Coach features depend on your account and the connected AI provider.
Built from a specification, checked by machines, then solved blind by two solvers. If either misses the key, it goes back.
Which skill it tests (sentence boundaries), how hard it should be, and its format: one blank, four choices, one answer.
A new passage and four choices, written for SummaLabs. This draft has a flaw. Can you spot it?
The key, the format and the wording are checked by machine. This draft passes, flaw and all.
The draft is compared with every question already in the bank, so no two are too alike.
Solver 1 chose B. Solver 2 chose D, “1854, and”, which is also correct. Two right answers means the question is broken, so it went back. D was rewritten as “1854, which”, and both solvers then chose B.
Every question has “Report a problem with this question” under More. A person checks every report, and you hear back.
The city’s first public library opened in 1854______ within ten years, it had lent more than fifty thousand books.
Which choice completes the text so that it follows the conventions of Standard English?
Hana L. is aiming for 1500 on Dec 5. Here are her weeks, and the Sunday email her parent Jae-won reads in Korean.
120
points to gofrom a most likely 1380 (±60 · Estimated)
Her free readiness check: one full-length adaptive test. A range, a skill map and timing for every question, so the family knows where she stands.
1320–1440
Most likely 1380
±60 · 1 Realistic test · Readiness check, Sat, Oct 24
Hana L., Grade 11, Seoul · Example, not a real student
80
points to gofrom a most likely 1420 (±30 · Estimated)
Two timed tests in, her range narrows. Her report shows what her 14 misses cost, and she redoes them in about 25 minutes.
1390–1450
Most likely 1420
±30 · 2 Realistic tests · latest Full test 2, Tue, Nov 3
Hana L., Grade 11, Seoul · Example, not a real student
4
Sundays before Dec 5
With her Test Pass, her parent gets a Sunday email with the week’s progress, in English or Korean, and a read-only link to the whole picture. No sign-in needed.
Hana 학생의 이번 주 학습 현황
추정±30 · 실전형 모의고사 2회 기준
Hana’s week
Estimated±30 · from 2 Realistic tests
Parent: Jae-won · Hana L. is an example, not a real student
1420
most likely1390–1450, ±30 · Estimated · locked before test day
Her range is locked before test day. After scores come out, about Dec 18, we publish how close our ranges were. Close or not.
1390–1450
Most likely 1420
±30 · 2 Realistic tests
Locked Fri, Dec 4, 11:59 p.m. KST
Checked against her score report, about Dec 18 · Example, not a real student
Send a payment link. Your parent pays in US dollars, or in won with a Korean card. Card, Apple Pay and Google Pay all work.
Payment link for Jae-wonTest Pass · $129 one-time · USD
Example. The link opens checkout for your parent; nothing renews.
Every range is locked before test day, then checked against the score reports students choose to share.
1390–1450
Most likely 1420 · ±30 · 2 Realistic tests · locked Fri, Dec 4
Inside her range, 20 points from the most likely score.
Example of how one check reads. Hana is not a real student.
Everything you just saw, in one place. The readiness check gives you the first part today, with no card.
One price for your test date. No subscription, a 24-hour refund window, and the readiness check costs nothing.
Free
No card
$129
One payment, through your next test date
For your next test date$599
One payment, through the next three test dates
More time to prepareNo auto-renewal · 24-hour refund window · No score guarantee.
Prices are in USD. The checkout shows the payment methods available to you. Teaching a class? Explore the tutor portal.
Class code RSP-DEC-7K2M
18 of 30 seats
| Student | Full tests | Summa Score Estimated | Biggest cost |
|---|---|---|---|
| J. K. | 2 | 1290–1350±30 · 2 tests | Advanced Math |
| M. P. | 1 | 1140–1260±60 · 1 test | Information and Ideas |
| S. L. | 2 | 1420–1480±30 · 2 tests | Standard English Conventions |
| D. N. | 2 | 1350–1410±30 · 2 tests | Geometry and Trigonometry |
| A. R. | 1 | 1210–1330±60 · 1 test | Craft and Structure |
Academies and tutors: manage your classes, assign practice and follow each student’s progress.
Anything else, the Help pages have it.
No auto-renewal · 24-hour refund window · No score guarantee.
Every pass is one payment for your test date, and you can request a refund within 24 hours if you have not started a paper. The details are under Refunds.
A range with a most likely score, built only from your timed full tests. It reads ±60 after one test and ±30 from the second.
We lock every range before test day, then compare it with the score reports students choose to upload. We publish the result, close or not; the first after the Dec 5 scores, about Dec 18. First results: see Accuracy.
Every question is written new for SummaLabs from a specification. Automatic checks, a similarity check and two blind solvers test it before you see it.
Your answers save every few seconds. Sign in on any computer and pick up at the same question, with the same time left.
Nothing renews: every pass is one payment. You can request a refund within 24 hours if you have not started a paper. See Refunds for the full conditions.
There are no token packs to buy at launch. The app shows which Coach features are available with your account.
Account → Sharing lets you connect a parent and choose what they can see. You can also ask a parent to pay.