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 with my math and science i got an A+ on my semester exam
Iysis
It helped me in science.
Quinn Hennessey
CK-12 has been very helpful in my high school years. With the advancement of technology, I no longer have to carry heavy textbooks around school or home or worry about damaging them. CK-12 also provides videos and Other amazing tools, which I am very grateful for!
Bettina
help me get smarter
Jonathan Rivera
CK-12 help me by making math books and lessons available.
William Wofl
CK-12 has been helping get through my Geometry class with no problems what so ever. Thank you CK-12!
Hall
I struggle at science but with ck-12 resources from my teacher helps me understand difficult concepts. So thanks a lot!
Paula
CK-12 has helped me understand science and science terms. I take notes on the articles CK-12 provides and I get good grades on my assignments.
Abraham
you teach me to never give up
Lauren
you help me learn plant pollination and about biology. thank you and i love you
Severa Swiger
helps practise my skills in maths
Nastia
This is amazing website that helps me learn everything I need to. Couldn't be more helpful!
Daelani
CK-12 has helped me in a great number of ways with my school.
Elishah Presley
Thank sfor great lessons in Science and History.
K. Pinnell
Helped me find ways how to solve math problems.
Evelyn
i didn't know what orbitals were until now thanks you
James
It helped me with astronomy
Natalia
It is a good website to understand the concepts of things
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