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
Awesome content!
Carina Smit
You have helped me get through chem Pre-AP
Blake Risler
you have taught me how to evaluate problems
Damien
It has helped me through math a lot. Plus it got me a few extra points in my math grade
Toran Daylee Brown
helped me understand science,my teacher didn't explain
William Campbell
It has helped me learn my 2 worst subject and it is now one of my favorite subjects all because of cK-12
Quinn Ames
u helped me by new ways i couldn't understand!!
Haley Kay Hergott
CK-12 has helped with great resources.
Vince Deblase
it helped understand how to solve ratios.
Nasia
It helped me learn science.
Tori H
Congratulation on turning 10 i'm in the 10th grade I go to Constitution High Philadelphia, PA I just want to say I have a hard time in math and your website helped me study and it even helps me practice some other skills that im not that good in
Makala Jackson
It has made things easier. And Ten YEARS! WOW that sure is a long time
Rafael
Ck 12 is a great way to study for tests!
Gabrielle
Just learning about Interdisciplinary units
Tracey Bussell
Awesome! Very helpful.
Ahmar Sheraz
cK-12 has helped me alot
Immanuel Maye
Great resource to learn the most complicated topics in simple ways.
Sean Mclaughlin
CK-12 has really helped with my Biology course this year. I can study and understand every thing they have on each lesson. I love CK-12 sooooo much! thank you CK-12!!
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.