act.org
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The official ACT website provides information on the exam, registration, test dates, fees, and score reporting, plus official prep resources, practice questions, and study tips.
More resources on SAT/ACT Preparation
UWorld SAT
Practice questions, free trial
Khan Academy SAT
Free official partner prep
SAT Math Destruction
Ace the SAT Math! Jonathan Chiritescu's course at 1600.io provides expert strategies to conquer the exam.
The Official SAT Study Guide
The Official SAT Study Guide - A book resource
khanacademy.org
Khan Academy is a free online learning platform offering official SAT prep with instructional videos, hundreds of practice questions, and full-length practice tests, plus personalized study plans and progress tracking.
collegeboard.org
Collegeboard.org is the official site of the College Board, offering SAT and AP exam information, registration, scores, and college planning resources. It also hosts official SAT practice materials and prep guidance.