The shift to the digital SAT (dSAT) has changed a lot about how students prepare for and work through the test. The format is different, the pacing is different, and perhaps most importantly, the tools available to students on test day are different. Many families focus heavily on running their student through practice test after practice when helping their student prepare. While repeat testing is essential, understanding how to use the test taking strategies and the tool available on test day are just as critical to a student performing at their best.
One of the most significant changes the dSAT brought with it is a built-in calculator that students can access on every math question. And yet, most students either don’t know it exists, haven’t practiced with it, or only use a fraction of its capabilities. The Desmos calculator is one of the most valuable tools for test takers—but only if they know how to use it.
What Is the Desmos Calculator?
Desmos is a free, online graphing calculator that has been integrated directly into the College Board’s digital SAT platform since 2024. Because it’s built into the testing software, students don’t need to bring their own graphing calculator on test day—Desmos is there, waiting to be used.
What makes Desmos different from a standard calculator is what it can actually do. Rather than just crunching numbers, Desmos allows students to graph equations, solve systems of equations, visualize functions, find intersection points, analyze inequalities, and check their answers—all within seconds. When used correctly, it can take abstract math problems and turns them into something students can see.
That’s the key distinction: Desmos isn’t just a calculator, it’s a visual problem-solving tool.
Why the Desmos Calculator Matters for the SAT
The SAT is designed to test a student’s ability to think efficiently and solve problems strategically—not just how well they’ve memorized formulas. That’s exactly where Desmos comes in.
The Desmos can’t help a student solve every question on the dSAT, but it can answer a lot of them. For many of the problems it can answer, using the calculator is significantly faster than solving by hand. Because the dSAT is timed, that speed is a real advantage. Desmos can also reduce careless arithmetic mistakes and help students visualize problems that might otherwise feel confusing or abstract.
It’s worth noting that students are still permitted to bring an approved handheld calculator, like a TI-84, on test day. However, many students are now relying more heavily on Desmos, and some its simpler and faster to solve some of the dSAT problems with it. As such, students who aren’t comfortable using the Desmos calculator can find themselves at a genuine disadvantage compared to those who have practiced with it.
Consider a few examples: instead of solving a quadratic equation by hand using the quadratic formula or factoring, a student can simply type the equation into Desmos and instantly see where the parabola crosses the x-axis. Instead of working through a system of equations algebraically, they can graph both equations and identify the intersection point in a matter of seconds. These aren’t shortcuts that sacrifice understanding—they’re strategic uses of a tool the test is explicitly providing.
Key Skills Students Should Learn
Getting the most out of Desmos requires knowing which math skills are most essential to the dSAT and how to apply them with a calculator. A student should be able to do the following on the Desmos calculator on test day:
Graphing equations: Whether it’s a linear function, quadratic, or something more complex, students should be able to type an equation into Desmos and immediately identify key features like intercepts, vertices, and the overall shape of the graph.
Finding intersection points: This is one of the most powerful uses of Desmos on the SAT. For any system of equations, students should be able to graph both equations and let Desmos find the intersection.
Using tables to identify patterns: Desmos allows students to enter data into a table format and run regressions to find the equation that fits the points, which can be an enormous time-saver for certain SAT question types.
Checking answers quickly: Even when a student solves a problem algebraically, Desmos can serve as a quick verification tool to make sure the answer makes sense visually before moving on.
Knowing when not to use Desmos: Just as important as knowing when to use it is understanding that some problems are faster to solve by hand. Spending time typing a simple expression into Desmos can actually cost time, so a student should have a strategy for how and when they use the Desmos calculator on test day.
Note: The goal of practicing isn’t to use Desmos for everything, it’s to use it strategically and efficiently—on the right problems, at the right moments.
Why It’s Important to Start Early
One of the most common mistakes students make in test prep is waiting too long to get familiar with Desmos. When students only encounter it in the final weeks before the test, they often spend valuable practice time just figuring out how the tool works instead of applying it to real problems. That can lead to frustration during practice tests and lower confidence heading into test day.
Students who start learning Desmos early during test prep and in mock exams get to build genuine fluency with it. They stop thinking about the mechanics of using the tool and start naturally reaching for it when they recognize the right type of problem. That familiarity eventually translates into speed, accuracy, and reduced anxiety on test day.
Final Thoughts
At The Enrichery, our strategic approach to test prep is personalized from day one. Every student begins with a proctored mock exam taken in the actual digital format, meaning they have access to the Desmos calculator. This gives coaches an accurate picture of how each student is currently performing, how they’re using the tools available to them, and where there’s room to grow.
From there, our coaches don’t just work through content. They teach students how to approach problems strategically, including how to recognize when and how to use tools like Desmos to their advantage.
By combining content knowledge, skills, with a strategic use of Desmos, students are able to build confidence and achieve better results on their math sections on test day.
If you’d like to learn more about how The Enrichery can support your student’s SAT preparation, contact us today!
