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
Hi! My name is Madison Soboul but I really like the name Elizebeth so... Anyways back on topic. I think Ck-12 has helped me become a better reader because I want to beat my record and speed. I think you could add a few things though, I think you should put some games where you answer questions to beat other students in your class.
Elizebeth
it helped me in making me advace in my studies and in school
Tae
hello you just helped me with my science project thank you
Raeden
It has helped me in many ways, i don't have to carry any books anymore thanks to you my shoulders don't hurt anymore HAPPY BIRTHDAY CK-12
Abagayle Spears
Ck-12 has helped me learn about science
Aiden Nelson
It is cool
Jamesoliver
CK-12 has helped me learn more science than I originally anticipated. Thank you!
Adam Tatti
thanks CK12 for interactive activities and videos
Ace
This website helped me in every way possible. Will honestly use this
Abby A
It let me watch better, more improved videos and i was veryyyyyyyyy, fun during these videos.
Nasiera Huff
Awesome content!
Carina Smit
Thank you ck-12 for helping improve my science skills!
Eliza
cK-12 helped me with my class work in science. Thank You
Haleigh J
It has helped me by giving me online textbooks so i dont have to take a bulky textbook that hurts my back home.
Nancy Magana
Hello! I greatly appreciate all that CK-12 has done to help me throughout my time in biology! I look forward to the amazing things that CK-12 will do in the future!
Evan W
School has been rough, and some of these assignments my teachers have assigned me, is also hard, but ck12 is much easier to work with
Victoria
helps practise my skills in maths
Nastia
cK-12 has helped me with various science assignments. Also, Happy Anniversary! :D
Aidan Moore
it has been helpful because you can see lots of new things and i learned so much because of ck12 its kinda now my favortie math app
Abril
cK-12 has been so helpful to me. Thanks to cK, I have learned so many things and expanded on my knowledge. You guys make it easier to understand history and make it actually fun, engaging,and interesting to do school! I love cK-12!
Comments from Educators
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.
This website has helped to design a customized website that addresses the specific content my students are covering.
Colleen K.
I can barely remember how I used to teach with an old dusty textbook. I have kept those around, but now I use them in a special activity: I have students rip out pages to underscore the fact that science is constantly changing. Traditional text, especially in science, are obsolete before they even ship. Needless to say, they are also very expensive. I have also turned several colleagues onto CK12 and now your awesome products are used in several grades here.
Colin H.
CK12 provides standards aligned digital text books, videos and activities I use while teaching.
Cindy E.
I am an elementary school teacher and this learning center has advanced my students so much. It is very helpful in the curriculum and overall is a great brain trainer for students k-12
Cindy M.
Excellent exercises and resources! Congratulations!
Cielo
Thanks for making your lessons available! It helps a lot as a supplement of my lesson.
Cicelia A.
It has helped me explain, through problems and text, basic concepts to my students.
Chuck N.
Awesome resource!!! Keep it free!! Keep up the excellent work!!
Christopher S.
I am so pleased with CK-12. The information is so great for all learning styles and types. The variability of the site allows for differentiation and diversity of learning. Thank you for everything thtat you have done and will do for my students.
Christopher M.
I have greatly appreciated the flex books and the connected practice sets! Those practice sets have been great help to my students that need just a little more time with material, and it saves me time from having to create more material resources myself!
Christine
K-12 is still a new educational system here in the Philippines and its effectivity leads me to seek reliable resources and materials. And, indeed, CK-12 has answered my needs as an educator. Cheers, CK-12!
Christine D.
it helped me on a lot of stuff
Christianna
Great science content! Lots of resources; video, text, quizzes. Love the connectivity to Edmodo. Very helpful!
Christiana D.
ck12 has helped me by teaching me new things in algebra and learning more and more about daily math life
Christian D.
So fun for students. Used the Natural Selection mouse interactive as a Do Now, so great.
Cheryl
I first used the CK12.org webpage in conjunction with traditional style biology ibook four years ago after going to a technology training. Now I have open sourced a regular biology Flexboook and an honors Flexbook for use by our entire school and embedded
Chris J.
our lessons make my job so much easier. I can count on quality lessons from you and can use them to meet student accommodations. Thank you.
Chris E.
I can find problems that suitable for my grade 8 son.
Cherry P.
it was a good educational website
Chelsea