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
I'm usually great with math but I always struggled with division and ck-12 has helped me concur that issue in his enlightened my math life.
Akinle Armand
I am a biology student so it helps me a lot when doing assignment
Ikhmal Syuqkin Bin Ismail
you teach me to never give up
Lauren
They have provided the ability to learn more things in new ways.
Blake Godbold
CK-12 has helped me understand my homework a lot more.
Fafnir
it has helped me alot with math and it is a good way to learn
Aj W
It helped me study for some tests that I got 100 on
Garret
CK-12 has helped me so much in school, whether for the basis of a topic or extra-credit work. Happy Anniversary, and keep up the great work!
Ellie
CK-12 has helped me with tests, homework, and learning different subjects.
Serenity Guerra
I've only been using this site for roughly a week but in that week I have actually been able to complete and understand my homework and I have a test soon on what I've been studying here and i have no doubt I will get a amazing grade on it. I'm so thankful on the vast number of topics there is as well I shared this site with my friend as well and it definitely helped their grades as well.
Racheal
Got me to understand global warming
Ivan
Thanks for all the help with homework!!!!
Lainey Shio
it has helped me get a better edjucation the teachers are tough sometimes but i think it is better for me
Serena Woodward
It has made me understand science more! Thanks.
Wilber Alexander Flores
It helped me help people and help the world! yayy!!!!!
Lam Vo
CK-12 has helped me with a lot in biology. Happy Birthday CK-12!!!
Israel
I LOVE CK12, always educating me in a fun and easy to understand style
Ola
It has helped me do online geometry.
Patrick
You are very helpful.
Akiya Sharp
It helps me understand and learn things better.
Comments from Educators
Wonderful simulations to enhance student understanding AND they work on the student iPads!
Chauncey H.
it help my student to have a better understanding on the specifc topic in the class discusion.
Charlin
In the digital age I find have a paper textbook for a dynamic science world limiting and not budget wise. Thank you for making this service available! I find it very useful as a resource in my classroom.
Charles R.
I have two children. One is 10 and the other 7 and they both are getting better with math as the semesters go by. Thank you for makimg this site free.
Chantely B.
well I am impressed by the high quality of the material, best of all, free to use. Keep up the good work!
Cesar R.
I love the helpful video links within the textbook and the integrated practice problems for the students
Cathy C.
Providing guided resources for teaching Earth Science. I class that I only recently began teaching was incredibly beneficial
Cassy B.
I have used parts and all of many lesson plans. Thanks.
Cathryn B.
It has given my students wonderful lessons!
Carolyn H.
I shared this resource with my students
Carmen M.
It has helped me find resources for my students
Carema M.
Helped me become a better teacher by offering a variety of resources to keep them engaged!
Caitlin C.
CK 12 was useful as I could download the text books for use with me students. Now I cannot do that anymore. Congratulations on your 10'th anniversary, you have gone from useful to useless for me.
C Smith
Amazing resource! With so many statewide educational budget cuts, it has been extremely difficult to find quality teaching resources. cK-12 has filled that niche quite nicely! I would recommend this valuable site to anyone. Thanks!
Bryan H.
Identify resources staff can use to develop relevant science curriculum
Brian A.
Providing lesson resources.
Brittany S.
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
helped me learn how to do my math better
Brady
This is a great "go-to" site for my daughter and I when she is struggling with a new math concept and needs that extra help. Thanks cK-12!!
Brenda S.
CK12 has helped me assist others by allowing them to be a part of this learning initiative.
Boris A.