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
helped me learn problems faster
Vicente Tinoco
i guess its easy to do work on the go now
Halen Willoughby
It has helped me with understanding math better, and let me tell you I suck at math so when I understand it, it is kind of a celebration time for me.
Naomi K
I am a biology student so it helps me a lot when doing assignment
Ikhmal Syuqkin Bin Ismail
It helped me study for some tests that I got 100 on
Garret
CK12 has helped me through many tough times. It's all because of ck12 that I could get back on track in maths class and I could get a perfect score. It has been immensely helpful. Thank you so much.
Taiba Abid
well it helped me learn stuff that i needed to learn for science
Alex O
I like this. It helps me learn more then I used to know.
Tanaiya Bulloch
Helped me learn stuff
Whopper Jr
It has helped me learn and helped me on my classwork!!!!
Raeleigh-Grace Ruiz
This site has helped me learn about new and different things that I hadn't known before! So, thank you!
Maeve
Ck-12 helped me know about all about the sources of energy.
Alaena R.
Ck12 helped me in learn more about history, it also helped me in my reading and practice with the English. Thank you Ck12.
Ivanna Najera Garcia
It has helped me pass science tests
Hallie
It helped with math and science
Glen
I'm usually great with math but I always struggled with division and ck-12 has helped me concur that issue in his enlightened my math life.
Akinle Armand
Its a great site!
Ellen
Ck-12 is great for catching up on reading!
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