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
it made my life easy
Mathunyane Alfred
CK-12 has helped me by allowing me to learn more things every day. I think that CK-12 is the right site for me and i love this site.
Jonvion Bryant
Ck12, has helped become a better student and work harder in my science class.
Lamees Sattar
ck12 hepled me get better grades so far and helped and teached me alot of things i didnt know
Sami Jones
Its helped me study a lot!
Alana
It helped me learn a lot, helped during my biology classes
Ivan R Ramos
It has helped me by teaching me a lot about what I didn't know
Ella U
Ck12 has helped me push myself to be passionate about chemistry. thank you.
Abby Kilpatrick
CK-12 has helped me in a great number of ways with my school.
Elishah Presley
ck-12 helped me with my homework and my project at school
Genice Sverre B. Dagatan
it helped understand how to solve ratios.
Nasia
nesecito que me ayuden con una tarea de geometria
Yuleni Meisa
It helped me to study for my tests, I really love it
Laith
This has helped me study for tests and has helped me in science class.
Haleigh Johnson
OMG!! cK-12 has helped me with sooo many assignments at school!! When my teacher assigns me a page from this website, it helps me with things I don't know, and when I take a quiz afterwards, I get a great grade!! Thank you cK-12!! :D
Wolfesess
I love this website
Camya Boone
helped me understand concepts in chemistry
Aileen Berroya
I love to use this website for 7th grade science it helps soooooo much i love this website.
Ian
CK-12 has helped me a lot with my grades
Immanuel M
IT HAS HELPED ME A LOT IN EXAMS.
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