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
Breaking down material into digestible bites.
Tanika R.
cK-12 has helped me regulate my time of doing homework and being able to go back to a recording of a class if I need to remember anything for homework or notes.
Summer
It helped a lot with my school and I just love this website I will use this for the rest of my life!
Summer
I appreciate the free text books. They gave me so many things to learn.
Sumit Y.
It helped me raise up my grades by a lot by telling my teacher to send me some lessons on what I didn't understand that well.
Sihyoung K.
I am an eighth grade student, taking geometry and without cK-12 I would not be able to take this course due to the fact my school doesn't have a teacher to teach it! So this helps me and my online teacher for me to learn geometry!
Sierra A.
Ck-12 has helped me with things I never knew about I hope they teach me new stuff. Thanks Ck-12
Sierra
ck12 has helped me allot. i really apprciete the website
Shyanne S.
It has help me a lot with the hints happy Anniversary ck-12
Shaylee
it helped me get a good grade in science i guess, so thanks!
Comments from Educators
I have no textbooks to use in my classroom not even old ones to use as reference material for the students. Part of the educational standards is for students to be able to read content at grade level. How do you do this without books? CK12.org has been the provider of books and practice material. I am using it in all of my science classes except for AP Physics as those students are required to purchase a college textbook. Thank you CK12! Without your support and online material my job would be extremely difficult. Congratulations on 10 years of educational support.
Cynthia B.
This website has awesome material to help my students to understand the world around them.
Cynthia
Ck-12 has brought science to life in my classroom with online videos, challenging reading and built in assessments to help my students know what they are learning.
Courtney M.
Making connections between real-life concepts and applications with students!
Cottey G.
I have used ck-12 science as my children's home school science curriculum for the past 2 years.
Cornella J.
kK-12 have helped me to find many activities and links to use in my class
Consuelo S.
given ability to work with multiple skill levels in one classroom
Corinna B.
I love to use ck12 on and off campus. and i love all the free resources
Cooper L.
I can barely remember how I used to teach with an old dusty textbook. I have kept those around, but now I use them in a special activity: I have students rip out pages to underscore the fact that science is constantly changing. Traditional text, especially in science, are obsolete before they even ship. Needless to say, they are also very expensive. I have also turned several colleagues onto CK12 and now your awesome products are used in several grades here.
Colin H.
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.