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
This website has helped me to develop a love of knowledge in a fun yet challenging manner.
Mateo
We do a lot of science work on this, and it is very helpful!
Olivia
It has helped me with my math skills so far, thank you!
Ralphel
it helps a lot with science and other things like that
Alanna
You helped me get through high school. Thank You
Verona
It let me watch better, more improved videos and i was veryyyyyyyyy, fun during these videos.
Nasiera Huff
I use this as a secondary program on my online school!!! i do like it alot keep up the work guys
Serenity C
Hello,CK-12! As a non-native English speaker,I have been reading CK-12 textbooks for learning not only STEM but also English. I really appreciate your hard work to provide such a good learning platform for so long. Wish you all happiness,health and prosper
Weilai
Ck-12 has really helped me with understanding science, and in finishing my homework. Thank you Ck-12!!!
Daksh Kohar
CK-12 is a fantastic resource website that make learn way much more easier thank you and happy 10th anniversary
Abel I
It helped me learn everything in a fun way!!!!! I was also able to understand what they were trying to tell me!
Aime Ramos Delcomte
It boosted me through a lot of math stuff.
Eliott
it help my teacher because we use it in her classroom. I guess you guys helped with learning to. So congratulation.
Yvonne
you helped me with math and the periodic table
Dagon Evans
I LOVE CK12, always educating me in a fun and easy to understand style
Ola
CK12 has helped me pass my biology class because my teacher just uses the same questions as the ones on the quizzes
Payton Wilosn
Helped me prepare for my teacher certification math portion.
Tomeka Daugherty
CK-12 helped me because it can give me answers on any assignment to pass Biology class.
Comments from Educators
You folks have done a great job getting the mental pictures of experts into the minds of novices. What a nice body of work!
Gregg S.
it helped me a lot. several lessons gave me ideas on how to attack and execute my lessons.
Gigi G.
I have found CK-12 a helpful resource for enriching my high shcool biology classes.
Beth A.
ck-12 helped me to build my lesson plans.
kaur
Dairy D.
I am a Science Olympiad coach for Anatomy and Physiology at a middle school. This is our first year as a team, so I have spent hours searching for materials. Your site offers just what we need.
Kippi F.
It will help me prepare my students also see where they are in their learning.
Angela
CK-12 has helped me by providing resources to support and reinforce lessons for my middle school students
Elaine H.
I am a newbie here but CK-12 has helped me a lot in teaching my students. Thank you, CK-12!
Helena K.
I love science and the online books are so easy to access! I love the ck-12 website home page thing! every thing is so well organized! I just love ck-12!
Isabella
I learned about CK-12 this year from the previous science teacher in my position at my new school. I have used CK-12 resources for all three of the subjects that I teach and my students just recently told me they would rather use CK-12 than Khan Academy.
Dan M.
CK-12 has helped liberate my classes from a traditional textbook. Now my students can read the content they need at their own level.
Donald K.
ck 12 is the only app which i get that is fully free second thing i m a cbse board student and the books available on ck 12 have material that i cannot get even in best refrences avalaible in my city.............. i prepared foooooor classssss 10 board from i and achieved 10 cgpa
Akhil
very good after all it is a helpful site to use.
Arianna B.
I first used the CK12.org webpage in conjunction with traditional style biology ibook four years ago after going to a technology training. Now I have open sourced a regular biology Flexboook and an honors Flexbook for use by our entire school and embedded
Chris J.
CK12 is a fantastic FREE resource that is comprehensive and engaging. I want my students to learn to look up information and use Internet resources and CK12 provides the opportunity for them to look things up without my help. The readings are clear and I
Jan
Provide great resources for teaching my scholars Algebra
Akinade S.
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.