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