Prep St – AI-driven personalized SAT prep replicating private tutoring

Summary: Prep St is an AI-powered SAT prep platform that personalizes study plans by continuously adapting to each student’s learning behavior using Bayesian Knowledge Tracing. It replicates private tutoring by prioritizing topics based on official SAT weights and student mastery, updating plans after every practice session to maximize score improvement.

What it does

Students upload a past score report or take a diagnostic test to initialize skill mastery across SAT topics. The platform generates and updates personalized study plans by tracking interactions and modeling understanding, focusing on high-impact areas to guide study sessions in real time.

Who it's for

It is designed for high school students seeking affordable, adaptive SAT preparation that mimics private tutoring without the high cost.

Why it matters

Prep St addresses the inequity in SAT prep access by providing personalized, effective study guidance that traditionally requires expensive private tutors, helping students improve scores based on effort rather than income.