Academia and Careers

Improve performance on the SAT

Leading Social Change: Jason Shah, founder of, which provides free test prep for college entrance exams to high school students across the country.

INeedaPencil - SAT lessons anywhere

CK-12 Foundation is a non-profit organization dedicated to increasing access to high quality educational materials for K-12 students all over the world. We offer free high-quality, standards-aligned, open content in the STEM subjects. By providing these free resources, CK-12 is working toward educational equity for all.


A web-based interactive math curriculum that provides daily lessons and real-time feedback.

I Need A Pencil

Free online SAT preparation with practice questions and an adaptive SAT score predictor.


A Facebook application allowing students to ask questions whenever they need answers.


Builds deep mastery and sharpens problem-solving skills through the most comprehensive K-12 math and science practice content.

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SAT preparation overview
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CK12 FlexBook Platform
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CK-12 Foundation