01 · PRACTICE
Practice sets
Choose modules and difficulty, answer, and get a worked explanation for every question.
Timer at SAT pace · printable worksheets · your progress and mistakes
02 · GAMES
Learn a skill, then beat the SAT
Short lessons and drills on 18 core skills, each round ending with a real SAT question. Daily challenge included.
03 · VOCABULARY
Words for the test
293 high-frequency SAT words, with definitions in English or 日本語.
04 · AI TOOLS
AI behind the questions
Experiments from my AI Lab that power or extend SAT Prep.