CK-12 Foundation
california-based non-profitable organization
The CK-12 Foundation is a California-based non-profit organization which aims to increase access to low-cost K-12 education in the United States and abroad. CK-12 provides free and customizable K-12 open educational resources aligned to state curriculum standards. As of August 2026, the organization's website reported that its platform had served more than 453 million users, customized 371K FlexBooks, and answered more than 2.88 billion questions.
CK-12 was set up to support K-12 Science, Technology, Engineering, and Math (STEM) education. It first produced content via a web-based platform called "FlexBook."
History
CK-12 was established in 2007 by Neeru Khosla and Murugan Pal as a not-for-profit educational organization. Teacher-generated content was initially made available under Creative Commons Attribution licenses so as to make it simpler, easier, and more affordable for children to access educational resources. However, they later switched to a Creative Commons Non Commercial licence, and then to their own "CK-12" license.
Originally, the "C" in CK-12 stood for "connect", indicating that the material was the missing connection in K-12 education. Subsequently, it took on a more open meaning, variously standing for "content, classroom, customizable, connections, collaboration".
In 2010, NASA teamed up with CK-12 to produce physics-related resources.
Begin with the source’s own compact description: “CK-12 Foundation” is california-based non-profitable organization. The dossier treats that line as a proposition to test through CK-12, Foundation and california-based, not as a finished interpretation.
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The record creator and administrative purpose are central evidence, because official documentation reflects both action and institutional priorities. The source revision retrieved here is dated Aug 26, 2026. The linked authority identifier is Q5012283. VIAF identifies the subject as 313500514. The Library of Congress control number is no2015010561. 3 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2026, 2007 and 2010.
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This entry incorporates text from “CK-12 Foundation” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.