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Forgetting is a natural part of how memory works. In fact, the brain begins to forget information almost immediately after learning it—unless that information is revisited periodically. Our system is designed to interrupt this “forgetting curve” by using spaced retrieval. This retrieval practice strengthens memory traces, making information easier to recall later under pressure. It’s one of the most reliable ways to build long-term retention, and it’s especially helpful for standardized test preparation where recall speed and accuracy matter. Over time, this turns short-term knowledge into long-term mastery.
Spaced repetition involves reviewing material at strategic intervals over time. While cramming might lead to short-term gains, the information often fades quickly. Spacing forces the brain to work a little harder each time, which strengthens retention and reduces forgetting. This approach helps students build lasting knowledge that stays with them all the way to test day.
When learning feels too easy, the science shows that the learning isn’t effective. Retrieval practice and spacing feel more effortful, but this desirable difficulty is what makes learning stick. The effort signals that the brain is working to build stronger, more durable memory pathways. Feeling challenged is a sign the student is learning.
Our AI uses adaptive algorithms informed by cognitive science to track how well the student recalls each concept. Concepts increase in difficulty as a student demonstrates mastery. Importantly, it spaces reviews at optimal times—just before forgetting sets in—so learning is reinforced right when it’s most effective. This timing mimics what top researchers call the “spacing effect,” critical to improving retention.
Yes. In fact, students who’ve struggled with traditional methods often benefit the most. Because the approach focuses on durable memory, not passive review, it builds real confidence. The emphasis on frequent, low-stakes practice helps reduce anxiety and prepares students to recall under pressure—something cramming and passive study rarely achieve.
Interleaving means mixing up types of questions or subjects during study, rather than focusing on one skill at a time. This forces the brain to constantly adapt, compare, and choose the right strategy. Though it may feel less smooth than doing ten similar problems in a row, it trains students to apply knowledge flexibly—just like the SAT does.
Yes. The strategies behind our system—retrieval practice, spacing, and interleaving—are backed by research in cognitive psychology and neuroscience at universities like Stanford, Harvard and Washington University. Studies consistently show that students who use these techniques retain more and perform better on high-stakes standardized tests. These aren’t trends—they’re evidence-based learning strategies proven to work.
Yes. We provide a link for your tutor to access all of your work, heatmaps and progress reports.
Sign up at satprep.us with your school email (one that ends in .edu). You can start for free and no credit card is required. Start with a baseline exam and we will help you understand the highest and best use of your study time.
After your trial ends, the all-in cost is $7.99 per month billed on a 12-month basis so roughly $96.00 per year. If your school participates in our partner program, it is free to you. Check with your school guidance counselor.
We are the Charles Prosser Foundation and we build AI tools for education. Check us out at www.prosser.ai.