Your dream score.
Guaranteed.
A free diagnostic shows exactly where you're losing points. From there, we take over: your study plan, a video for every problem you miss, and a fresh version to prove you've got it.
12 questions · about 15 minutes · no signup needed to start.
Miss a problem → watch it solved → beat a fresh version of it.
Straight off the August 2026 SAT.
I just took the August SAT and I wanted to thank you. I could answer every. single. question. Before this I had a 1290. Two questions were directly repeated from these 196 on my paper, it saved me so much time. I got a 1500!! 790 math.
Nine students sent us their August scores.
Math 690 to 790, four of the nine at 750 or above. Eight had taken the SAT before, and every one of them went up: 80 to 180 points on the total, and 80 to 110 in Math.
1570710 → 790 Math+120 total“Your YouTube videos on hard problems helped, and your new practice problems too. Thx so much!!”
Fatima A. · Senior
1520660 → 740 Math+80 total“OMG I didn’t think 1500 was possible, but my math went up so much in one month with Sigma Prep.”
Chloe S. · Senior
1510740 Mathfirst SAT“Thank you sir for helping me reach my dream score.”
Muhammad H. · Junior
1500700 → 780 Math+90 total“Found your YouTube and watched ALL of your videos, grinded hard problems on Sigma Prep, and it was easy.”
Joshua G. · Senior
1470650 → 760 Math+130 total“THANK YOU SO MUCH. I didn’t think my math would surpass my English, ever.”
Alisa S. · Senior
1470640 → 740 Math+180 total“I prepared over the whole summer with Sigma Prep and did almost every test, and never felt more confident walking into the test. You’re the best SAT math tutor!”
Adem M. · Senior
1450660 → 750 Math+100 total“I was stuck in the 650 range for three tests. Then I found your YouTube videos and did your practice problems too, and now I got a 750!!!”
Omar D. · Senior
1430610 → 720 Math+150 total“Made a huge jump in August thanks to your help. Going to see if September is even better!”
Vincent C. · Senior
1360590 → 690 Math+160 total“First test with Sigma Prep and it went pretty well! I will try again. Thank you Sigma Prep!!”
Sebastian F. · Senior
The College Board score reports, as the students sent them. Swipe or use the arrows. Gains are each student’s total score over their previous SAT, and the Math jump is against the old Math score they told us.
Find it. Watch it. Crush it.
Find what's costing you points, watch the fastest way to solve it, then beat it yourself. That's the whole system. On your schedule, at your pace.
Find what’s costing you points
Take the free 15-minute Diagnostic Quiz. Get an instant score estimate and a map of every topic dragging your score down.
Take the Diagnostic Quiz →Watch the fastest way, then beat it
Miss one? A short video shows the quickest method. Then a fresh version of the same problem shows up, and you beat it. Repeat until the topic can’t touch you.
Browse topics →Prove it on a full-length test
Sit a complete, full-length practice test built to mirror the real SAT. Watch your score climb toward your goal.
See practice tests →Never wonder what to study next.
Take the free practice test and Sigma builds your study plan on the spot, then carries it for you: it always knows your next move, reshuffles around what you miss, and keeps you on pace for your test date. You just hit “up next.”
Start free today!Free practice test included. Your plan appears the moment you finish it.
Real scores. Real students.
Many from students who found us on YouTube before the most recent June 2026 SAT. Every gain below is from a verified test taker.
+110 PTS“Found your YouTube videos a week before the June SAT. Watched the walkthroughs, practiced the same problems on Sigma Prep, and went from a 620 to a 730. Best SAT math content on YouTube.”
+200 PTS“I hit my dream score and locked it in before the end of junior year. Thank you Sigma Prep.”
+150 PTS“The videos taught me the fastest ways to use Desmos and break down each problem. This made everything easy.”
+80 PTS“I was able to just focus on the hard problems and the abundant practice helped it all click together. This helped me break through my plateau.”
+140 PTS“Every time I got a problem wrong there was a video to show me the best way to solve it. Being able to watch and retry another similar problem right away made improving effortless.”
+140 PTS“Having so many hard-level problems to grind through helped me lock down the problems I wasn’t getting consistently. That’s what got me from good to nearly perfect.”
+90 PTS“I was stuck in the 590-620 range for multiple tests. The practice problems and tutoring helped me break 700 in math on my last attempt. Thank you Sigma!!!”
+80 PTS“Your explanations were the best I found on YouTube. Other channels made it confusing but you showed the simplest way to solve everything. Going for even higher in August.”
+50 PTS“I only found your YouTube channel a few days before the June test but the videos were incredibly helpful. Signing up for Sigma Prep now to see how much further I can go for August.”
+110 PTS“Thanks for helping me reach my 700 goal!!”
+60 PTS“The hard problems were all I focused on and it helped me nail the end of Module 2. Went from a 740 to a perfect 800. Thank you so much.”
+190 PTS“My PSAT score was really low and practice tests weren’t moving it. Sigma Prep changed that. I worked from easy to medium to hard and the repetition with video explanations made it all click. Two tests in and still improving.”
+140 PTS“This made math super easy. The videos were the best. I wish Sigma Prep had an English part too.”
+170 PTS“Your videos made it so easy!! Thank you.”
+130 PTS“OMG I never thought my math would be better than my English. Now I wish you had English too!”
+80 PTS“Thanks Sigma, your lessons were really helpful and grinding the hard problems helped me crush the June test.”
+120 PTS“With your practice problems I was scoring a lot of 800s on practice tests, and I only missed one on the actual test.”
+100 PTS“Made a huge jump in June and I’m so happy. Can’t wait for the next one to see if I can do even better!!”
+80 PTS“Your YouTube videos on hard problems helped, and your new practice problems too. Thx so much!!”
+80 PTS“OMG I didn’t think 1500 was possible, but my math went up so much in one month with Sigma Prep.”
+80 PTS“Found your YouTube and watched ALL of your videos, grinded hard problems on Sigma Prep, and it was easy.”
+110 PTS“THANK YOU SO MUCH. I didn’t think my math would surpass my English, ever.”
+90 PTS“I was stuck in the 650 range for three tests. Then I found your YouTube videos and did your practice problems too, and now I got a 750!!!”
+110 PTS“Made a huge jump in August thanks to your help. Going to see if September is even better!”
+100 PTS“I prepared over the whole summer with Sigma Prep and did almost every test, and never felt more confident walking into the test. You’re the best SAT math tutor!”
+100 PTS“First test with Sigma Prep and it went pretty well! I will try again. Thank you Sigma Prep!!”
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The full 800 plan, in 8 minutes
A perfect scorer who has taught this test for years — the exact plan his private students get.
Everything a great tutor does.
Hand-built by a perfect scorer with a decade of SAT experience.
A video on every problem
Not an answer key. A perfect scorer solves all 7,000+ problems on video, so you learn the fastest method.
Built to mirror the real SAT
Every problem is modeled on official exams: same format, same topic mix, same difficulty. Beat it here, recognize it there.
Three difficulty levels
Every topic runs Easy to Hard, so you build from the fundamentals up to the questions that decide your score.
24 full-length tests. Zero repeated questions.
Every test mirrors an official SAT practice test question-for-question (same format, same difficulty, brand-new numbers) and comes in three unique versions. None of them ever give you the same problem twice, so a retake is a real measurement, not a memory check. The most honest way to know where your score actually stands.
Everything about our SAT practice tests →
New tests added regularly. Watch the matching official test broken down on our YouTube channel, then take Sigma’s version.
Try it risk free for 14 days.
A tutor charges up to $200 per hour. This is $49 for a whole month of everything · cancel anytime
- ✓Every problem solved on video by a perfect scorer
- ✓7,000+ problems modeled on the real SAT
- ✓24 full-length timed practice tests
- ✓Quizzes built from your misses
- ✓Always knows exactly what you should do next
- ✓Cancel anytime, keep access till period ends
Every topic free to try, plus one full practice test. No card required.
Before you start
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Free forever: 3 questions per topic + 1 full practice test. No card.