Khan Academy is a free, nonprofit online learning platform covering PreK through college-level content across math, language arts, science, history, computing, and test prep. Its strongest and most comprehensive content is in math — a complete, sequenced library from counting through calculus, with short video lessons, practice exercises, and mastery-based progression built in.
Families use Khan Academy in a wide variety of ways: as a full math curriculum backbone, as a supplement to check understanding alongside another program, for targeted gap-filling, or as SAT/AP test prep. The parent dashboard lets families assign work, track progress, and set goals. Khanmigo, an optional AI tutoring add-on, guides students to answers Socratically rather than just giving them away, and a single subscription covers up to 10 children.
One of the best educational resources available at any price, let alone no cost.
The most comprehensive free math sequence available, including SAT and AP prep.
Assign work, track progress, and set goals — all in one place.

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