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 has helped me alot during class. it was better than a book to learn out of.
Serenity W
Ck-12 helped me understand cell structure.
Mattea
nesecito que me ayuden con una tarea de geometria
Yuleni Meisa
It's a great way to learn about science and other subjects. It has great projects and it's probably my favorite thing to do in Science.
Aaron Dickerson
CK-12 has helped me by finding anything that needed for me to succeed in school.
Toma
It has helped me to be able to learn about what we have done in Chemistry, and tests me on what I know.
Dana Mcswain
it helped me in my science class
Ja'Crispy
this has helped me throughout my science grade. SO THANK YOU!!!!!!!
Careena
CK-12 has helped me in mny ways. I use it as a workbook in class, and a study tool at home. THANK YOU CK-12
Rachael Z
It helps me get my science done
Ivory Ray
I am a home schooled student and ck-12 is one of my favorite online resources. I can't wait to see what the next ten years holds for ck-12. Keep up the good work. Thank you.
Kaitlyn
It really helps me get all my glass work done SO THANKS a lot and happy 10 ANNIVERSARY!!!!!!!!!!!!!!!!!!!!!!!!!!!
Dalton A
Helped me learn
Aidan
CK-12 has helped me learn the important facts about things I didin't know. It is a great online source to help out with questions you arent sure about.
Pauline
i am home schooled and ck 12 has really helped me with my studies
Kaitlyn M
It helped me study for my science mid term exam.Thanks to ck12 I have got a full 100 on my science mid-term! Thank you ck12!
Vinnie
I love this thing so much because it helps me to study for my upcoming quizes
Bianca Rivera
It helped me understand the cell theory
Comments from Educators
Awesome resource!!! Keep it free!! Keep up the excellent work!!
Christopher S.
it helped me on a lot of stuff
Christianna
I have used cK-12 to help teach and plan lessons for my students.
John A.
My class has learned so much from ck 12, its easy, resourceful, and all in one place. Thank you so much!
Alex J.
I have used articles on a variety of Science topics with students to enhance their understanding
Ela B.
free books!!!
Lauryn C.
CK-12 is off thee chart! I love using this tool in my chemistry classroom because it brings in a variety of perspectives and does progressive testing. A great tool for getting them ready for what NGSS is bringing down the pipeline.
Kelly M.
CK-12 is an amazing site to use to help students understand topics better, and it has helped me through my earth space honors class. Thanks so much!
Dalila Z.
I am just starting to use Ck-12, so far it seems like a great resource for homeschooling my daughters.
Margaret B.
Thankyou thankyou thankyou very much for providing these resources for free. ck-12.org is very great resource for students it is very helpful in schools and out of schools for self study.
Biswajit A.
CK-12 IS AMAZING! It deepened my child's knowledge and understanding involving geology, health, and much more! Thanks a bunch for always being there for my child when he most needed it.
Jewel
Help my students learn in their Science class.
John B.
I can teach my kids a variety of subjects and topics. There is a lot of amazing material to help my kids in school.
Daniela
I love your online book and resources! I have been using your online book with my middle school students for 3 years and I love it. Thank you for providing excellent materials for us.
Connie Jo E.
it has helped me to attain my bsc
Garvin M.
ck-12 is an amazing resource that provides up to date information that I can use to supplement our science textbooks. It also has leveled activities which helps when differentiating instruction. Keep up the great work!
Donna M.
As a teacher it provides a resource for my students they may not have thought about. I look forward to seeing what it has to offer.
Ed
Love the ability to customize lessons!
dabourd