Testimonial

I am a huge proponent of the open-source philosophy, especially where it pertain...
We love the materials on your website. This is a wonderful way for our teachers...
First of all, THANK YOU for assembling this extraordinary chemistry text. I am i...
I like your organization because it is a great step to spread the education in t...
Thank you to everyone at CK12. You have been hugely important in my development ...
Love Love Love the "Traditional Textbook" feel. In other words, I have had to wo...
I appreciate the efforts of CK-12 to provide quality products for all educators,...
We are just beginning to explore CK-12. The possibilities are very exciting for...
I enjoy using ck-12 because there are so many different ways to learn the same i...
I like your organization because it is a great step to spread the education in t...
I think that your site is awesome and I believe it is worth supporting at this t...
First, I used your Biology textbook and (very) successfully completed the CLEP b...
Great site with great resources. Well done one creating such an invaluable reso...
Thank you everybody who is at ck12. For self learners like me this site is the g...
We appreciate the tools provided by CK-12 to help in our children's home school ...
Dear CK12 Support, I want to share with you that last year I used the CK12 Biolo...
I'm very, very grateful to CK-12. CK12 is really a key resource for our learning...
You guys are awesome and thank you so much for making this. I enjoy using it :)
My students are enjoying the books! They are REALLY helpful! In a situation wher...
You are a great resource!!! Thank you for getting the job done.
CK-12 is simply amazing!
I think you are doing a great job and I was glad to incorporate your flexbooks i...
Just discovered your site through a link on the creative commons website. I was ...
Like the Geometry textbook very much. We are a poor school district, but our stu...
Dear CK12 Support, I want to share with you that last year I used the CK12 Biolo...
I love the concept, love how the organization is working, and love the website a...
What you all have done, to open the door to educators to see how you all think, ...
I was and I am still amazed by the service, fantastic!
Excellent site with amazing resources. The service you have provided is so great...
I think the site is wonderful and we certainly appreciate the content being upda...
I appreciate the work that your organization has done. It's wonderful to find a...
I love the idea behind the CK-12 learning resources. They are very stimulating ...
You all are a help to all students. You all are awesome!
Thank you for the materials and work created. It is refreshing to find up to dat...
You all are a help to all students. You all are awesome!
Thank you, CK-12, for all that you do! Without your support, I could not have be...
We appreciate the tools provided by CK-12 to help in our children's home school ...
I have a STEM girl (8th grade) who needs advanced content that is not faux/pseud...
I really enjoy using ck-12, and I want to thank you for offering such a helpful ...
CK-12 has created the most powerful digital text on the market and in the proces...
I *love* your flexbook system for Alg I and Geometry... This is a fantastic idea...
I enjoy using ck-12 because there are so many different ways to learn the same i...
Thank you! Without these tools it would be impossible for our family to educate ...
I really appreciate your organization. I am 73 years old and it’s been over 55...
Wonderful resource. works especially well for more kinetic children who are over...
Love Love Love what CK-12 has done so far. My students love it, too!
I love how I can use my chemistry FlexBook on my iPad and not carry around a hea...
I really find your books extra ordinarily helpful in my studies. I have recommen...
Thank you for your wonderful study help...because of your site and my own school...
Thank you for the generosity of your efforts. My students have gained from your...
Thank you for providing this free service. As a low-tuition private school, reso...
Thank you so much for the materials provided online. With our transition to alig...
I tell everyone about CK-12! I really enjoy being able to bring all of our schoo...
CK-12 is a powerful learning tool because of its customization advantage.
I believe FlexBooks are the way of the future!
Thank you for making CK-12 a free source material. I use your resources extensi...
We really love your products. The ability to access other material is really hel...
As a Principal of a small private school, I wanted to express my thanks for the ...
This is an excellent resource that many of my students have found valuable!
The FlexBooks are so much better than any other textbooks I have found. They all...
CK-12 is an amazing program! I am so glad I found it!
I randomly found your site when I was searching for some E-books,and
luck...
Thank you for the materials and work created. It is refreshing to find up to dat...
Awesome. Thank you. I work with kids with learning disabilities and the text see...
Thanks for all the help CK-12, it's a fantastic site.
This is the first Science text book that my son has enjoyed. He is now getting ...
CK-12 represents the future of education; knowledge should be available free to ...
I love the idea behind the CK-12 learning resources. They are very stimulating ...
I think the improvements that are being made are wonderful. I believe that this ...
I love the work you guys are doing. I'm a physics teacher in Denver Colorado and...
You guys are the best. You can change many lives, since you pretty much offer fr...
You guys are the best. You can change many lives, since you pretty much offer fr...
I really enjoy the site and it's very refreshing to have access to free exam pre...
I love how I can use my chemistry FlexBook on my iPad and not carry around a hea...
I LOVE MY CHEMISTRY TEACHER FOR INTRODUCING CK-12 TO ME!!!!
I am extremely grateful for the CK-12 materials it helps me home school my young...
I love the concept, love how the organization is working, and love the website a...
You guys are revolutionizing public high school education. It's fantastic! Keep ...
I am a rising sophomore at Cupertino High Schoool, and I have been using
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Thanks for all the help CK-12, it's a fantastic site.
I think the site is wonderful and we certainly appreciate the content being upda...
I appreciate the efforts of CK-12 to provide quality products for all educators,...
I'm very, very grateful to CK-12. CK12 is really a key resource for our learning...
CK-12 has helped me learn and achive good grades.
I LOVE my CK-12 and I love what you have done with the concepts this year. For A...
My students are enjoying the books! They are REALLY helpful! In a situation wher...
You guys are revolutionizing public high school education. It's fantastic! Keep ...
Love your books and the click through features especially. It helps the content ...
Thank you for your wonderful study help...because of your site and my own school...
CK-12 Foundation is noble work for huminity and mankind
With the student that I am teaching science to, the material you have provided o...
CK-12 Foundation is noble work for huminity and mankind
I hadn't visited your site for a while and I am absolutely astounded and blown a...
High quality, simple, FREE! This enables me to move toward 'tailored learning' f...