CK-12 Surpasses 317 Million Users Worldwide

Business Wire India

CK-12 proudly announces significant growth and impact in the educational sector, highlighting its commitment to enhancing learning experiences worldwide. Since 2015, CK-12 has transformed education – serving more than 317M users worldwide with more than 2.62B questions answered by students on the CK-12 platform.. The foundation has also trained and certified thousands of teachers across 60+ different countries, showcasing its extensive global reach and influence.


Flexi, CK-12’s AI-powered tutor introduced in 2024, has made substantial strides in personalized education. Flexi has benefited more than four million users with more than 23 million student questions answered. In the month of May alone, Flexi helped more than 700,000 students and answered more than 3.1M student questions.


Neeru Khosla, CEO and Founder of CK-12, emphasizes the platform’s impressive footprint: “Our growth in student engagement and global reach showcases the impact Flexi is making in the educational sector. With 700,000 students actively using Flexi each month and our presence in over 60 countries, we are dedicated to providing accessible, high-quality education to students..”


Flexi revolutionizes education by maximizing engagement and knowledge gain. The platform delivers timely feedback on students’ progress, empowering them to reflect on their learning journey and continuously improve.


Through these updates, Flexi aims to revolutionize the way students learn, providing them with the tools and support they need to succeed in their educational endeavors. To experience the power of Flexi’s latest features, visit




CK-12 Foundation, founded in 2007, is a nonprofit organization dedicated to improving student learning outcomes by providing high-quality, free educational resources. Its mission is to empower students, teachers, and parents by leveraging cutting-edge technology and innovative educational practices. Through its adaptable and personalized learning platforms, CK-12 strives to make education more equitable and accessible to students around the world. CK-12’s flagship AI tutor, Flexi, embodies our commitment to revolutionizing education by offering tailored support and fostering lifelong learning.




Neeru Khosla, born in Delhi, India, is a prominent figure in the field of education, dedicated to revolutionizing learning on a global scale. In 2007, she co-founded the CK-12 Foundation, a nonprofit organization aimed at reducing the cost of academic books for the K-12 market both in the U.S. and worldwide by providing free, high-quality educational materials. Recently, the CK-12 Foundation launched the Flexi AI Tutor, an innovative tool designed to personalize learning experiences using artificial intelligence. Neeru holds a Master of Education (M.Ed.) degree from Stanford University, which has significantly influenced her innovative approach to education. Based in Palo Alto, California, Neeru continues to drive various philanthropic efforts. Her work with CK-12 reflects her commitment to leveraging technology to make education more accessible and equitable for all students.



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