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