About AIFirstIndex

AIFirstIndex helps students prepare smarter for the Digital SAT. Most practice tools give you a single score and leave you guessing about what to study. We take a different approach: our diagnostics map every question you answer to a specific micro-topic, so you finish with a clear, color-coded picture of exactly where your concept gaps are.

Why micro-topics?

A score of 600 tells you where you stand, but not what to do next. Knowing that you scored 38% on “Systems of linear equations” but 90% on “Linear functions” tells you exactly where an hour of study will pay off most. That is the core idea behind our Weakness Index.

Our questions

All practice questions on AIFirstIndex are original and written in the style of the Digital SAT. We follow the College Board's published domain structure for the Math and Reading & Writing sections, but we do not reproduce official SAT questions.

The platform is free to use and does not require an account. We fund development through advertising so that students everywhere can access diagnostic prep at no cost.

SAT® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this website.