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