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 made my life easy
Mathunyane Alfred
CK-12 has helped me by allowing me to learn more things every day. I think that CK-12 is the right site for me and i love this site.
Jonvion Bryant
Ck12, has helped become a better student and work harder in my science class.
Lamees Sattar
ck12 hepled me get better grades so far and helped and teached me alot of things i didnt know
Sami Jones
Its helped me study a lot!
Alana
It helped me learn a lot, helped during my biology classes
Ivan R Ramos
It has helped me by teaching me a lot about what I didn't know
Ella U
Ck12 has helped me push myself to be passionate about chemistry. thank you.
Abby Kilpatrick
CK-12 has helped me in a great number of ways with my school.
Elishah Presley
ck-12 helped me with my homework and my project at school
Genice Sverre B. Dagatan
it helped understand how to solve ratios.
Nasia
nesecito que me ayuden con una tarea de geometria
Yuleni Meisa
It helped me to study for my tests, I really love it
Laith
This has helped me study for tests and has helped me in science class.
Haleigh Johnson
OMG!! cK-12 has helped me with sooo many assignments at school!! When my teacher assigns me a page from this website, it helps me with things I don't know, and when I take a quiz afterwards, I get a great grade!! Thank you cK-12!! :D
Wolfesess
I love this website
Camya Boone
helped me understand concepts in chemistry
Aileen Berroya
I love to use this website for 7th grade science it helps soooooo much i love this website.
Ian
CK-12 has helped me a lot with my grades
Immanuel M
IT HAS HELPED ME A LOT IN EXAMS.
Comments from Educators
CK-12 is an excellent resource for teachers and students. It has been very helpful in providing intervention & remediation for my students.
Antoinette C.
CK12.org has given me an online text and teaching materials that are NGSS aligned. This has enabled me to teach to the standards even though our school does not have a physical textbook. This has been such a lifesaver as a junior high science teacher!
Anne K.
CK-12 helped me by allowing me to access supplemental science curriculum for my students. It assisted me in the differentiation of instruction for my student body.
Anne B.
Thanks to CK12.ORG, my students enjoy the assignments and the activities created by ck12. Thank you.
Anna M.
Awesome resource used for student teaching.
Ann
My search for free online study materials,concept teaching videos and acquiring extra knowledge and concept quizzes ended after signing up at CK-12.Its really great work that CK-12 is doing,helping knowledge victims free of cost.
Ankit R.
I use it during my lectures for Introductory Physics courses at the university. Helps reinforcing ideas and visualize sometimes quite complicated concepts.
Ania
It will help me prepare my students also see where they are in their learning.
Angela
Getting new resources is always a struggle. Our district has really been focusing on technology. New teaching materials hasn't been high on the list. Thanks to CK-12 I have the text resource that I need being used in a way my students enjoy!
Angenette S.
Thank you for helping me home school.
Anel
You Helps us to thrive! We want to say you thank you!
Andrew
I love using your textbooks for my classroom. Ties in tech and provides an inexpensive alternative.
Andrea M.
Integrating all subjects and resources.
Andrea T.
I use it as a resource in my classroom.
Amy L.
CK-12 has provided our school with free science texts and has given my students the opportunity to publish their writing online in the Understanding Biodiversity book. Thank you!
Amy H.
Helped me in my Anatomy and Biology classes - reinforcing content through grade appropriate reading
Amy B.
CK-12 has been an integral component in our move to 1-1 in the classroom. The ability to edit the content allows us to tailor the CK-12 textbooks to fit our needs. We love CK-12!
Amy
CK-12 has been helping us teach our children several subjects. Thank you #ck12foundation .
Amber
i can make my students understand better, thanks
Amruth L.
Hello CK12! I am an 8th year science teacher. I taught in Philadelphia and Washington DC, and am currently in Abu Dhabi teaching science to 12 year-old girls. CK12 is a revolutionary website. Not only can I access high-quality science literature, but I ca
Amber W.