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
Helps me with math and science and it is easy to use and fun thank you Ck - 12
Payton Spears
They have provided the ability to learn more things in new ways.
Blake Godbold
CK-12 helped me with my school work.
Addison
Ck-12 has primarily helped with science in certain ways and im glad it still exists today
Daden
CK-12 has help me by leting my do all of the things that i need to do on these cromebooks
Samatha Martin
Hi! My name is Madison Soboul but I really like the name Elizebeth so... Anyways back on topic. I think Ck-12 has helped me become a better reader because I want to beat my record and speed. I think you could add a few things though, I think you should put some games where you answer questions to beat other students in your class.
Elizebeth
Thank you cK-12! You helped me so many times to study for my chemistry and human body tests and quizzes! I can't wait till I go into astronomy and learn all about it! Thank you for everything!
Alex
CK-12 has helped me because it has taught me things about space and the earth that i maight of never had learned with a different site. Also CK-12 has done an amazing job making their material easy to use and it isnt confusing
Hailey
it helped me get better at math and helped me raise my math grade from a 45 to a 89
Faruk
Hello! You guys have helped me through my Pre-Calculus class and I don't know what I would do without you! Thank you
Abigail Franco
ck-12 ha helped me by making it posible for me to learn about energy and all sorts of scientific stuff. i love ck-12
Tony Barry
I really like the many ways of learning content. The practice, videos and articles are so current and valid.
Stephen K
ck-12 has helped me a lot to improve my grades
Fatima V
just found this random website because i was searching for places with convergent oceanic-oceanic plate boundaries
William
It helped me because its about math it can teach you alot of things math mostly and prime numer blocks pictures
Abril V
Many things that I couldn't learn anywhere else, I can learn here for free! To me that's the best I can get.
Tamaria
I have received so many materials, and i have got 100 in science test uhuyy!!
Vinia
it helped me in making me advace in my studies and in school
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