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 helped me survive physics last year. i would have been lost without it
Alan Grajeda
Very useful course materials
Aj P
Helped me pass college statistics
Torronce
It has helped me do online geometry.
Patrick
CK-12 has helped me in a lot of ways. You have helped my in science, math, and other subjects! Thank you!! I also appreciate that you have let me get all A's throughout 6th grade. Hope to study on this site more often!!!
Alayah Clark
Thanks for helping me with science
Selena
made me love school and work harder
Izayah
Ck-12 has helped me on many of my homework assignments.
Weston Willis
They're Just SO GREAT!
Kailey Sterling
Please do not tell anyone my name and Email, I am trusting you with it. CK-12 has helped me so much, I am in 6th grade and were using it for Science, It is so much helpful. Last year we used it for Social Studies and it was confusing but it was helpful. Thank you, CK-12.
Anonymous
Hi ck-12!!! congratulations!! Im one year older then you!! But....... you guys helped me get a A in science class and my teacher was very impress with my work I have. I just started when I first became a 6th grader, and I was pretty mad I had too start a new website. I always had gotten a D in science and I love science
Jasmine Whitfield
I love it! Thanks sooooo very much! A GREAT alternative resource from the traditional textbook.
Venise Borum
I want to thank you guys for everything you guys have done. You make things easy to access and have offered many helpful things within my classes.
Adam Bradley
CK12 is really awesome, thank you
Zach Diego
It is very fun and helpful
Willy
I did a seventh grade project using your website. It was about the different body systems and your site explained it good. Keep it up! Looking forward to coming back and seeing what's new.
Sd
CK-12 helps me understand science a lot better than just randomly taking notes. There's pictures and explanations, too, making it easier to understand the text.
Kaitlyn L
It helped me to study for my tests, I really love it
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.