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
helped me learn problems faster
Vicente Tinoco
i guess its easy to do work on the go now
Halen Willoughby
It has helped me with understanding math better, and let me tell you I suck at math so when I understand it, it is kind of a celebration time for me.
Naomi K
I am a biology student so it helps me a lot when doing assignment
Ikhmal Syuqkin Bin Ismail
It helped me study for some tests that I got 100 on
Garret
CK12 has helped me through many tough times. It's all because of ck12 that I could get back on track in maths class and I could get a perfect score. It has been immensely helpful. Thank you so much.
Taiba Abid
well it helped me learn stuff that i needed to learn for science
Alex O
I like this. It helps me learn more then I used to know.
Tanaiya Bulloch
Helped me learn stuff
Whopper Jr
It has helped me learn and helped me on my classwork!!!!
Raeleigh-Grace Ruiz
This site has helped me learn about new and different things that I hadn't known before! So, thank you!
Maeve
Ck-12 helped me know about all about the sources of energy.
Alaena R.
Ck12 helped me in learn more about history, it also helped me in my reading and practice with the English. Thank you Ck12.
Ivanna Najera Garcia
It has helped me pass science tests
Hallie
It helped with math and science
Glen
I'm usually great with math but I always struggled with division and ck-12 has helped me concur that issue in his enlightened my math life.
Akinle Armand
Its a great site!
Ellen
Ck-12 is great for catching up on reading!
Comments from Educators
Awesome resource!!! Keep it free!! Keep up the excellent work!!
Christopher S.
it helped me on a lot of stuff
Christianna
I have used cK-12 to help teach and plan lessons for my students.
John A.
My class has learned so much from ck 12, its easy, resourceful, and all in one place. Thank you so much!
Alex J.
I have used articles on a variety of Science topics with students to enhance their understanding
Ela B.
free books!!!
Lauryn C.
CK-12 is off thee chart! I love using this tool in my chemistry classroom because it brings in a variety of perspectives and does progressive testing. A great tool for getting them ready for what NGSS is bringing down the pipeline.
Kelly M.
CK-12 is an amazing site to use to help students understand topics better, and it has helped me through my earth space honors class. Thanks so much!
Dalila Z.
I am just starting to use Ck-12, so far it seems like a great resource for homeschooling my daughters.
Margaret B.
Thankyou thankyou thankyou very much for providing these resources for free. ck-12.org is very great resource for students it is very helpful in schools and out of schools for self study.
Biswajit A.
CK-12 IS AMAZING! It deepened my child's knowledge and understanding involving geology, health, and much more! Thanks a bunch for always being there for my child when he most needed it.
Jewel
Help my students learn in their Science class.
John B.
I can teach my kids a variety of subjects and topics. There is a lot of amazing material to help my kids in school.
Daniela
I love your online book and resources! I have been using your online book with my middle school students for 3 years and I love it. Thank you for providing excellent materials for us.
Connie Jo E.
it has helped me to attain my bsc
Garvin M.
ck-12 is an amazing resource that provides up to date information that I can use to supplement our science textbooks. It also has leveled activities which helps when differentiating instruction. Keep up the great work!
Donna M.
As a teacher it provides a resource for my students they may not have thought about. I look forward to seeing what it has to offer.
Ed
Love the ability to customize lessons!
dabourd