Testimonials
See the opinions of students and educators just like you. Select from the following to learn more.
Why Students Love CK-12!
Take a look at what these students have to say about CK-12!
Wonderfull! like that it’s really to the point and precise. There’s lots of pictures and diagrams that are helpful when you are trying to learn.
My teacher made these textbooks, and it has everything that we need for this specific class.
It’s really accessible so it’s easy for the whole class to get on and we just go!
We use it every day because there’s something new that our teacher wants us to look at!
My CK-12 book is really nice because it has all of the information I need in it. Instead of hunting for all of the words and questions I have, it’s all there right in order
Comments from Students
Ck-12 has been a real eye opener and has helped me through my high school years
Mark T.
They helped me very well. I hope that all topics will have videos. Thank you so much.
Mark I.
it has made homework fun
Mark B.
ck 12 has helped me looking for the best topic for me to learn all learning areas.
Marjonie B.
It has helped me to better understand the topics we learn in science class.
Kylie J.
it helped me with science
Marius C.
It has made me understand my classes better.
Kyleigh M.
cK-12 has helped me a lot. I have all A's in my classes because of this website and know much more then I did before cK-12. Thank You!!! Happy 10th anniversary.
Kieahna
I understand math problem more when I practice them independently.
Kierra S.
This site has helped me, with my biology, projects, understandment of learning more ways to solve work. Happy anniversary.
Comments from Educators
CK12.org has given me an online text and teaching materials that are NGSS aligned. This has enabled me to teach to the standards even though our school does not have a physical textbook. This has been such a lifesaver as a junior high science teacher!
Anne K.
CK-12 helped me by allowing me to access supplemental science curriculum for my students. It assisted me in the differentiation of instruction for my student body.
Anne B.
Thanks to CK12.ORG, my students enjoy the assignments and the activities created by ck12. Thank you.
Anna M.
Awesome resource used for student teaching.
Ann
My search for free online study materials,concept teaching videos and acquiring extra knowledge and concept quizzes ended after signing up at CK-12.Its really great work that CK-12 is doing,helping knowledge victims free of cost.
Ankit R.
I use it during my lectures for Introductory Physics courses at the university. Helps reinforcing ideas and visualize sometimes quite complicated concepts.
Ania
Getting new resources is always a struggle. Our district has really been focusing on technology. New teaching materials hasn't been high on the list. Thanks to CK-12 I have the text resource that I need being used in a way my students enjoy!
Angenette S.
It will help me prepare my students also see where they are in their learning.
Angela
Thank you for helping me home school.
Anel
You Helps us to thrive! We want to say you thank you!
Andrew