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
This website has helped me to develop a love of knowledge in a fun yet challenging manner.
Mateo
We do a lot of science work on this, and it is very helpful!
Olivia
It has helped me with my math skills so far, thank you!
Ralphel
it helps a lot with science and other things like that
Alanna
You helped me get through high school. Thank You
Verona
It let me watch better, more improved videos and i was veryyyyyyyyy, fun during these videos.
Nasiera Huff
I use this as a secondary program on my online school!!! i do like it alot keep up the work guys
Serenity C
Hello,CK-12! As a non-native English speaker,I have been reading CK-12 textbooks for learning not only STEM but also English. I really appreciate your hard work to provide such a good learning platform for so long. Wish you all happiness,health and prosper
Weilai
Ck-12 has really helped me with understanding science, and in finishing my homework. Thank you Ck-12!!!
Daksh Kohar
CK-12 is a fantastic resource website that make learn way much more easier thank you and happy 10th anniversary
Abel I
It helped me learn everything in a fun way!!!!! I was also able to understand what they were trying to tell me!
Aime Ramos Delcomte
It boosted me through a lot of math stuff.
Eliott
it help my teacher because we use it in her classroom. I guess you guys helped with learning to. So congratulation.
Yvonne
you helped me with math and the periodic table
Dagon Evans
I LOVE CK12, always educating me in a fun and easy to understand style
Ola
CK12 has helped me pass my biology class because my teacher just uses the same questions as the ones on the quizzes
Payton Wilosn
Helped me prepare for my teacher certification math portion.
Tomeka Daugherty
CK-12 helped me because it can give me answers on any assignment to pass Biology class.
Comments from Educators
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.
So many STEM resources at all grade levels available from ck-12!
Katy
It has helped my students learn
Kathryn
I am an italian teacher of chemistry. I like my work and new teaching strategies. Often some of my students can speak English better than italian and as I know how much important english is, I invite them to keep an english lecture on a particular topic for the whole class, including me. Your videos, tests and documents are really helpfull in this! Thank you very much
Antonietta
The drill and practice has helped my son recognize which function a math problem requires.
Marc M.
Instructional texts for students to learn curriculum standards
F Woodall
I have relied on CK-12 for simulators to help my students understand topics that are not able to be done easily in the classroom and has helped them to learn and also saved the school money!! Thank you and happy anniversary!!
Ericka O.
Looking for a better way to explain scale drawings and proportions to my special education students
Jennifer L.
An invaluable resource for learning materials.
Dan P.
Me ha ayudado a planear clases más interesantes para mis estudiantes.
Danelly M.
CK-12 has been incredible. I've been using it to homeschool my middle-schooler for two years now, and it is unbeatable.
Kasheia
Congratulations! You have done good work and helped many in their education journey. Interactive practices, instantly graded tests, and outlines and explanations, including videos and PLIXes, have helped me and my math students.
Jennifer T.
CK-12 has helped us with our homeschooling and letting my daughter move at her own pace.
Leigh
I love using the free resources as a literacy component in my science classroom. Many topics that I teach can be found at Ck-12 and the content is both accurate and engaging!
Emily I.
Love the free online science textbooks
Kate O.
I use Ck-12 to find resources for my high school Significant Support Needs class.
Kim C.
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.
In the digital age I find have a paper textbook for a dynamic science world limiting and not budget wise. Thank you for making this service available! I find it very useful as a resource in my classroom.
Charles R.