College Board -- SAT Practice Tests, Practice Essays and Answer Explanations
Test Prep Toolkit -- Free ACT and SAT Practice Tests
ACT Test Prep--Official ACT website *Scroll down for the free webinars, test prep guide, and online practice.
Preparing for the ACT 2020-21 -- Free Booklet with full-length practice test and strategies
PowerScore Test Preparation -- Free official ACT and SAT practice tests and answer keys. Also includes SAT scoring guides, answer explanations and sample 8th/9th grade version of the SAT.
Kaplan Test Prep -- Free SAT Turbo Test; includes links to "Free SAT Bootcamps" (live event)
Khan Academy – Full length practice SATs to take on paper
Princeton Review – Free sample classes and practice tests (ACT, LSAT, MCAT, SAT, SAT Subject)
4Tests – Free Practice Exam Site (Educational, Computer, Professional, Fun Exams)
ACT, SAT and AP Study Guides (free until Fall 2020)