MirrorAP

Experience test day before it happens.

About AP Practice Exam Online

Free Digital SAT practice built around the real test-day experience.

The Digital SAT runs entirely inside Bluebook, College Board's official test-day app. Many students practice on paper or third-party sites that skip adaptive modules, grid-in input, and the built-in Desmos calculator. We built a free simulator so you can experience those tools before exam day.

Background

Why we built this

The problem

Paper prep and generic quiz apps do not replicate the Digital SAT Bluebook layout. Students walk in unprepared for module navigation, grid-in entry, and Desmos on Math. Schools lack a simple way to assign digital SAT practice and see who completed it.

Our mission

We digitize SAT practice inside a Bluebook-style simulator. Upload Reading and Writing, Math, or full test PDFs. Practice adaptive Module 2 routing, grid-in questions, and Desmos. Get scaled 400 to 1600 scoring with instant feedback. Teachers assign modules and track class completion.

Product

What the platform does

Digital SAT simulator

Adaptive Module 2 routing after Module 1, built-in Desmos graphing calculator on Math, grid-in (Student-Produced Response) scoring, and scaled 400 to 1600 score reports. The layout mirrors the real Bluebook experience.

Non-adaptive and six-module adaptive paths supported.

PDF-to-digital SAT

Upload Reading and Writing, Math, or full Digital SAT PDFs from your dashboard. AI detects MCQ versus grid-in, splits modules, and builds takeable Bluebook-style exams you can assign or publish.

Teacher and institution panel

Create classes, assign SAT practice exams and teacher resources, set due dates, and monitor completion. Institutions receive org-wide analytics across teachers, classes, and students.

Instant scoring and explanations

Section scores on a 200 to 800 scale with a composite 400 to 1600 total. Every question can expand into an AI tutor explanation on the results screen. Track section trends over time in Performance Insights.

Technology

How AI scoring works

SAT uploads go through the same AI pipeline as AP, with extra handling for grid-in detection and module splitting.

  1. 1

    PDF analysis

    Gemini reads the document, splits SAT modules, detects MCQ versus grid-in, and extracts every question with its options or numeric prompt. Claude serves as backup when Gemini is unavailable.

  2. 2

    Answer key and grid-in grading

    AI generates answer keys for MCQ when missing. Grid-in responses use tolerance-aware numeric grading so equivalent forms like 0.5 and 1/2 score correctly.

  3. 3

    Scaled scores and explanations

    Raw correct counts map to approximate section scores. Submit a full test for a composite total. Expand wrong answers for AI explanations tied to the source PDF.

Guide

How to use the platform

  1. 1

    Browse or upload SAT practice

    Filter community-published tests by section on the exams page. Or sign in, open Dashboard, and upload a Reading and Writing, Math, or full Digital SAT PDF.

  2. 2

    Configure adaptive routing (full tests)

    For full Digital SAT uploads, choose non-adaptive mode or six-module adaptive routing to practice Module 2 easy and hard paths after Module 1.

  3. 3

    Complete each module

    Work through questions with mark-for-review, grid-in input on Math, and the Desmos calculator. Navigate with the question grid just like test day.

  4. 4

    Review your score report

    Submit to see scaled section and total scores. Review mistakes, read AI explanations, and track progress in Performance Insights.

Ecosystem

Community SAT practice library

Students and teachers publish SAT modules for others to practice. Upload a PDF, toggle Publish on your dashboard, and share the link. Browse community tests when you want extra modules beyond your own materials.

  • Community tests for Reading and Writing, Math, and full Digital SAT
  • Publish or unpublish uploads anytime from Dashboard
  • Share direct exam links with classmates or tutoring groups
Browse community SAT tests

Schools

For teachers, schools, and institutions

Deliver Digital SAT practice in a Bluebook-style environment. Assign modules, track completion, and review class performance from your teacher panel.

  • Class roster management with join codes
  • Assign SAT MCQ exams and resources with due dates
  • Per-class completion analytics and institution-wide reporting

Coverage

Supported SAT sections (3)

Each section includes module timings, scaled scoring, and community-published tests.

Study guides cross-check official College Board sources each July.

Help

Frequently asked questions

Is this affiliated with College Board?

No. We are independent. We mimic the Digital SAT Bluebook interface for practice only and are not endorsed by College Board.

What SAT formats are supported?

Reading and Writing modules, Math modules with Desmos, and full Digital SAT tests. Adaptive Module 2 routing supports non-adaptive and six-module paths.

Are grid-in questions supported?

Yes. SAT Math grid-in (Student-Produced Response) questions use a dedicated numeric input with decimal, fraction, and tolerance-aware grading.

How is the SAT score calculated?

Section scores approximate 200 to 800 using raw correct counts. The composite totals 400 to 1600. This is an approximation, not official College Board equating.

Can teachers use this for SAT prep?

Yes. Upload SAT PDFs, assign practice to classes with due dates, and review per-class completion analytics from the teacher panel.

Which AI models are used?

Google Gemini primary with multi-version fallback. Claude as backup for PDF analysis on busy days.

Contact

Questions, feedback, or bug reports? We read every message. info@apracticexamonline.com

Schools and districts can request institution access.