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
Made me happy
Pau La
CK-12 has helped me by letting me learn about science and helping me with my work at school. If I didn't have this web site I never could of learned what I need to learn about the science.
Tam
Learning Algebra
Elizabeth
By providing free books on mobile phones
Aadil
They held me with my language arts so happy to h ave them with me yay!!!
Ralica
CK-12 has helped me allot in my grades i told my friends about this site they liked it and good marks because of u Ck-12 thank you.
Imad
I am terrible at math. And with cK-12 you make it a little easier to understand for me. So thank you for that!
Gabrielle E
my teacher uses it in class
Taniya Keener
CK12 is the best online learning source ever.
Mason Ramos
i loveeeeeeeeeeeeeeeeeeeeeeeeeeeeee ck-12 so much too bad i cant use it in high school next year
Latina Harris
It helped me help people and help the world! yayy!!!!!
Lam Vo
I love this website
Camya Boone
You guys helped me understand my material, Mostly Science, and helped me finish my tests with a fair amount of ease.
Idris Donovan Anderson
This has helped me study for tests and has helped me in science class.
Haleigh Johnson
it helped me on everything which is awsome!!! Brah!! goz
Abdulsalam
cK-12 has helped me with various science assignments. Also, Happy Anniversary! :D
Aidan Moore
you have helped me in many ways during school hours by giving me a cite where i can study for test.
Natalie Mcginity
Hi. it works a lot espically in school to help me understand things to help me proceed in life.
Comments from Educators
By making me a more competent teacher.
Jayson R.
Ck-12 has really helped me pass my praxis test and it helps me daily with my classroom teaching my students to expand their mind.
April R.
Hi people from CK-12! First and foremost, Happy 10th Anniversary! You've really helped my science class by giving us great information and FREE learning textbooks! You truly were a godsend to my teachers here at school. Thank you so much creating this web
Davina
CK-12 has helped my chemistry students to understand course concepts better. Students enjoy the interactive tutorials: these online tutorials help to differentiate learning in a more engaging way. I LOVE using CK-12 in my science classes!
Jeff O.
I am a first-year chemistry teacher in an under-funded charter school. Our books are almost 10 years old and our lab doesn't have a complete stock. While searching to remedy some of these challenges, I stumbled upon CK-12 which offers a solution to a semi-outdated text and no online option for students who have grown up in the technology age. Thank you for allowing me to add your site as a resource and have options for useful tools to teach my students. Your site helps to make me a better teacher.
Dr K
Integrating all subjects and resources.
Andrea T.
I used some of the lessons for my national board certification. Lessons from ck-12 have helped my students to understand concepts from readings and videos provided. Love Ck-12
Holly D.
Amazing resources for my 5th grade class! Grateful for it!
Jennifer S.
cK-12 has helped me teach my child on several subjects. It is a fantastic resource weather you homeschool or not.
Laura G.
Happy Birthday
Jay
It's my first year in a new school, with a completely different curriculum structure than I'm used to teaching in biology, and my class did not come with any textbooks! For the first 2 months of school I would spend countless hours trying to combine diffe
Kathryn S.
thanks my child is studing in 6th std .i want he knows all babic concept of math and science.thanks
Shobha K.
Providing lesson resources.
Brittany S.
I have read your biology books. With the help of ck books I am able to clear doubts of daughter and its helped me a lot. Thank you very much for CK
M.
It has given my students wonderful lessons!
Carolyn H.
Ck12.org has helped each and every student who has come to our center. I was been a great experience for our students, as well as a enormous help for the teachers! CK12.org has made our learning journey easier and more exciting!!!
Bright Harbor Academy
You have helped gain me so many assignments with full distinctions
Kelly N.
TEACHING CHEMISTRY
Fatih