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