Online SAT tutoring · accepting new students

Understand the logic.
Read with clarity.

“All English texts can be understood under the conduct method.” Learn to follow how ideas relate, so comprehension, not keyword hunting, leads your answer.

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1520Digital SAT
780Math
740R&W
99thPercentile
VERIFIED SCORE1520780 MATH · 740 R&W
Dennis Dertli
Meet DennisVideo introduction
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Clearer reading
from lesson one
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Book a free 20 minute trial.

Pick a time that suits your family. You will get an instant confirmation email with the lesson link. We’ll use the trial to see how your child reads the relationships between ideas.

  • Completely free, 20 minutes
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  • Your child leaves with a clearer way to read the logic
Dennis Dertli, Digital SAT tutor
Dennis Dertli1520 Digital SAT · Your child’s tutor

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OFFICIAL SCORE VERIFICATION
152099th percentile

Verified by the official College Board score report.

780 Math740 Reading & WritingTested December 6, 2025
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Official SAT score report showing Dennis Dertli's 1520 total score, including 780 Math and 740 Reading and WritingCLICK TO VIEW FULL PDF ↗
01Live 1:1 lessons
02Logic & context
03Fast comprehension
04Materials for practice
Meet your tutor

Hi, I’m Dennis. I teach students to see the logic beneath the words.

Portrait of Dennis Dertli, Digital SAT tutor
Dennis Dertli · 1520 DSAT

“I mean SAT is just logic and literature, think it like math exams.” My approach teaches students to understand how a text works, not to rely on a memorized trick or a keyword guess.

I am a Schoolhouse certified tutor, certified in March 2026. In Reading & Writing, we study how each statement stands in relation to the others, and how context and logical conduct work together. Students can think in their own language: “You will be able to understand logic itself. Which is above all languages and cultures.” Lessons draw on curated wordlists, example tests, targeted practice sets, and subject learning materials. I also teach SAT Math and Desmos strategy.

✓
Verified SAT report1520 · December 2025 official scoreView report ↗
SH
Schoolhouse certifiedCertified tutor · March 2026
99
99th percentile1520 Digital SAT
1:1
One to one onlineLive lessons, personal plan
The conduct method

Learn to follow the logic from statement to statement.

“The most important one is not fast reading, its fast comprehension.” We build comprehension by seeing how ideas relate, with context filling the shape of each logical conduct.

01

Notice the conduct

We identify what each statement is doing, such as introducing evidence, explaining a method, or drawing a conclusion, and how it connects to the next.

SEE THE STRUCTURE
02

Read the context

Context gives meaning to the logical structure. As Dennis puts it: “the shapes are conduct, the colors are context.” We learn to use both together instead of chasing isolated words.

LOGIC + CONTEXT
03

Comprehend, then answer

Practice applying the method to SAT questions until the reasoning feels clear and the answer follows from what the text actually says.

FAST COMPREHENSION
What the method teaches

Build reasoning skills across the SAT.

A

SAT Math

In Math, we build understanding of the concepts and reasoning behind each problem, then practice applying them clearly and efficiently.

ALGEBRA · GEOMETRY · ADVANCED MATH
B

Reading & Writing

Learn how each sentence functions and connects: whether it introduces evidence, contrasts ideas, or supports a conclusion. Context and conduct work together.

GRAMMAR · EVIDENCE · PACING
C

Desmos strategy

Use Desmos as a tool for mathematical reasoning: graph, test relationships, and check whether an answer fits the problem.

SHORTCUTS · GRAPHING · CHECKING
VERIFIED STUDENT PROGRESS · 21 DAYS

One student’s progress over twenty one days.

A record of one student’s practice test scores from August 10 through October 19, 2026, including a later follow-up test. These results are individual; the lessons focused on their needs and the reasoning behind each question. The score reports are available below.

Superscore+300

990 1290

Aug 10, 2026 → Aug 31, 2026
Best Math 690 (Aug 26) + best R&W 600 (Aug 31)
Best single test+230

990 1220

Aug 10, 2026 → Aug 26, 2026
Highest total score in one sitting
Math+130

560 690

Aug 10, 2026 → Aug 26, 2026
Best Math section score
Reading & Writing+170

430 600

Aug 10, 2026 → Aug 31, 2026
Best Reading & Writing section score

Every test, in order

  1. August 10, 2026990430 R&W · 560 MathStarting point
  2. August 23, 20261060470 R&W · 590 Math+70
  3. August 26, 20261220530 R&W · 690 MathBest total · best Math
  4. August 31, 20261170600 R&W · 570 MathBest R&W
  5. October 19, 20261220550 R&W · 670 MathPractice 5

Scores taken from the student’s official College Board practice score reports; the student’s name has been redacted from the published PDFs for privacy. Superscore combines the best Math and best Reading & Writing section scores across sittings. Practice results are not college reportable and individual results vary.

VERIFIED STUDENT PROGRESS · 30 DAYS

A second student’s progress over thirty days.

A second student’s practice test scores between September 2 and October 2, 2026. The reports show one individual path over five practice tests; results vary from student to student.

Superscore+150

1150 1300

Sep 2, 2026 → Oct 2, 2026
Best Math 630 (Sep 28) + best R&W 670 (Oct 2)
Best single test+120

1150 1270

Sep 2, 2026 → Oct 1, 2026
Highest total score in one sitting
Math+70

560 630

Sep 2, 2026 → Sep 28, 2026
Best Math section score
Reading & Writing+80

590 670

Sep 2, 2026 → Oct 2, 2026
Best Reading & Writing section score

Every test, in order

  1. September 2, 20261150590 R&W · 560 MathStarting point
  2. September 19, 20261210630 R&W · 580 Math+60
  3. September 28, 20261260630 R&W · 630 MathBest Math
  4. October 1, 20261270650 R&W · 620 MathBest total
  5. October 2, 20261260670 R&W · 590 MathBest R&W

Scores taken from the student’s official College Board practice score reports; the student’s name has been redacted from the published PDFs for privacy. Superscore combines the best Math and best Reading & Writing section scores across sittings. Practice results are not college reportable and individual results vary.

Student feedback

What my students say

EmmanuelJuly 19, 2026 · Verified student
★★★★★
“Good teaching, perfect, thank you!”
Dennis Dertli
Reply from DennisJuly 26, 2026

I love our lessons!

REAL STUDENT PROGRESS · TRIAL LESSON

A first look at how a student applies new reasoning

A parent shared the student’s first SAT practice test result after our trial lesson. Learning the method takes time; using it begins with understanding how the text works.

Message from a student's parent sharing the result of their child's first SAT practice test after the trial lesson
Shared after lesson oneEach student builds understanding through practice and clear reasoning.
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Lesson bundles

Choose your route to test day.

Single lessons are $60 an hour. In a bundle the rate falls the further ahead you book , $53 an hour at 4 lessons, down to $47 at 20. Not sure yet? Start with the free 20 minute trial , no card, no commitment.

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Single lessons

One 60 minute lesson at a time, booked whenever you need it , no bundle, no commitment.

$60/ 60 min lesson
START SMALL

4 lesson sprint

Focused practice in one priority section or skill cluster.

$212$53 / 60 min lesson
  • 4 private lessons
  • Targeted assignments
  • Progress checkpoints
BUILD MOMENTUM

8 lesson plan

A balanced start for building skills in Math and Reading & Writing.

$412$51.50 / 60 min lesson
  • 8 private lessons
  • Full skills roadmap
  • Desmos strategy session
DEEP PRACTICE

16 lesson plan

More time to build understanding and strengthen fundamentals.

$776$48.50 / 60 min lesson
  • 16 private lessons
  • Section by section drilling
  • Mock test reviews
FULL PROGRAM

20 lesson program

A complete program for steady practice from diagnosis through test day.

$940$47 / 60 min lesson · lowest rate
  • 20 private lessons
  • Complete Math + R&W program
  • Full mock test analysis
  • Priority scheduling
  • Save $13 an hour vs pay as you go

Single lessons are $60 per hour. Bundles are $53 per hour at 4 lessons, $51.50 at 8, $50 at 12, $48.50 at 16, and $47 at 20. The 20 minute trial is free with no card required; payment for lessons and bundles is completed securely through Stripe. No email step before checkout.

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Choose 1 to 4 private classes each week. You are billed every four weeks. Subscriptions renew every four weeks until cancelled. After checkout, activate Premium to schedule and manage Cal.com lessons. By subscribing, you agree to the Terms of Service and Refund Policy.

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1 CLASS / WEEK

Steady start

4 private classes · $51.20 per class

$204.80per 4 week billing period
2 CLASSES / WEEK

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8 private classes · $49.60 per class

$396.80per 4 week billing period
4 CLASSES / WEEK

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The rates span $4.80 (10% of the $48 rate for three classes) from the 1 class weekly plan to the 4 classes weekly plan. Stripe renews every four weeks. Activate Premium with your checkout code to schedule and revise paid weekly times.

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Before you book

Good questions.
Clear answers.

Still unsure how the conduct method fits your child? Email me about their reading challenges and test date, and I’ll explain how we can approach them.

Email Dennis ↗
What happens in the trial lesson?+

It is completely free and takes 20 minutes. We work through a short diagnostic, look at how your child connects ideas and chooses answers, and discuss how the conduct method could support their learning. You are welcome to sit in.

Do you teach both SAT Math and Reading & Writing?+

Yes. Reading & Writing lessons focus on logic, context, and how statements relate. Math lessons build understanding of the concepts and reasoning behind problems. We can focus on either section or combine both.

Can you help my child use Desmos faster?+

Yes. We practice using Desmos to represent mathematical relationships, explore solutions, and check whether an answer fits the problem.

Can you guarantee a score increase?+

No tutor can guarantee a specific result. The conduct method is a way to understand reasoning in texts, not a promised score. Progress depends on each student’s learning, practice, consistency, and test day performance.

1520
Your next move

Let’s build the reasoning
that carries beyond one test.

Tell me what feels difficult when your child reads. We’ll look at how logic and context can make the text clearer.

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Beyond the test

Read my philosophy
& logic essays.

Essays on logic, reasoning, and the ideas behind the method.

Explore my essays
Free20 min trial
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