This post contains a list of links to Khan Academy's excellent set of interactive classes.

**KHAN ACADEMY'S MATH MISSIONS**

If you're really dedicated, it's possible to learn all of high school math through Khan Academy. Look, Ma: no teacher!

I personally used Khan Academy's math missions (Geometry, Algebra II, Trigonometry, Precalculus, and High School Statistics) to prep for a perfect score on the SAT Math Level 2 subject test. If you prefer to study on paper, check out Steve Warner's Math Level 2 workbook.

Algebra Basics

Algebra I

Geometry

Algebra II

Trigonometry

Precalculus

High School Probability and Statistics

Differential Calculus

Integral Calculus

All Math

**KHAN ACADEMY'S TEST PREP PROGRAM**

Khan Academy's SAT program

Khan Academy provides good SAT practice, but its answer explanations aren't always helpful. SAT Math problems always have more than one solution, and the fastest solution takes 30 seconds or less. Khan Academy's explanations only include one solution per problem, and it may not be the one that is fastest or easiest for everyone.

Its answer explanations for the SAT's Critical Reading section can be particularly incomplete and confusing. To be fair, I've looked at most of the prep books for the new SAT, and all of them have this problem to some extent.

It's a good idea to supplement Khan Academy's test prep program with Erica Meltzer's Complete Guide to SAT Reading and Steve Warner's SAT Math course.

**KHAN ACADEMY'S NEW MISSIONS**

These missions are still under development. There's helpful practice here, especially for AP Statistics, but there's not enough material to learn everything on your own without using a separate textbook.

AP Statistics

Chemistry

Biology

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