(NOTE: This is not necessarily to replace school - I thought I'd post it here for teachers who might be interested in using this resource as a supplement. I haven't logged in to any of the "lessons", but heard about this from a friend. Let me know what yall think!)
We are complementing Salman's ever-growing library with user-paced exercises--developed as an open source project--allowing the Khan Academy to become the free classroom for the World.
Browse 1800+ videos by topic:
* Math
o Arithmetic
o Developmental Math
o Pre-Algebra
+ Core Pre-Algebra
+ Worked Examples 1
o Brain Teasers
o Algebra
+ Core Algebra
+ Worked Examples 1
+ Worked Examples 2
+ Worked Examples 3
o Geometry
+ Core Geometry
+ Worked Examples 1
o Trigonometry
o Probability
o Statistics
o Pre-Calculus
o Calculus
o Differential Equations
o Linear Algebra (Advanced)
* Science
o Biology
o Chemistry
o Physics
o Organic Chemistry
* Humanities & Other
o History
o Finance
+ Core Finance
+ Banking and Money
+ Valuation and Investing
+ Venture Capital and Capital Markets
+ Credit Crisis
+ Paulson Bailout
+ Geithner Plan
+ Current Economics
* Test Prep
o SAT Math
o GMAT
* Talks and Interviews
http://www.khanacademy.org/