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 find out more about molecules and cells along with animals and plants in my class and helped me to pass my tests and study.
Zoie
This site helped me that I am passing all my grades and I appreciate all the help.
Matthew Abadam
Helped me learn
Aidan
Ck-12 has helped me a lot with science so I was wanting to challenge myself with 8th grade level.
Elliote Dinovo
CK-12 helped me in very very many diverse ways!
Victoria Kim
i have learned thins i havent learned before
Mason Vonwert
thanks CK12 for interactive activities and videos
Ace
You helped me and my class with science and on awesome stuff like that!
Tony
CK-12 help me by making math books and lessons available.
William Wofl
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
Many things that I couldn't learn anywhere else, I can learn here for free! To me that's the best I can get.
Tamaria
because you give me important facts and real facts and i can trust you guys thank you so much for that and i love this website and i would recommend this website to all my friends and thank you for giving me this chance to give my feedback
Quynterrius
you helped me so much with my biology witch i'm still using you for thank you
Adrien J. Ray
AMAZING FACTS AND MINI LESSON CONGRATES
Billy
You've made understanding physics seem so easy. Thank you!!!!
Aamiah
THANKS. Its helped med study for important tests, and its been a really helpful resource for me.
Jorge
CK-12 has helped me understand biology.
Kahrie Stegman
Thanks U very much for building up this wonderful platform for children who need help. I am devoting in a volunteer program and their children like CK very much!
Comments from Educators
kK-12 have helped me to find many activities and links to use in my class
Consuelo S.
Awesome resource!!! Keep it free!! Keep up the excellent work!!
Christopher S.
I can communicate with my children about assignments when I am working and I the resources have been a valuable resource for our classes with multi-faceted view points and study aids.... Thank you
Hodge Home School Academy
Tutoring!
Katie A.
to edcuate lower class student
Manish
CK-12 has helped me by providing resources to support and reinforce lessons for my middle school students
Elaine H.
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.
Excellent exercises and resources! Congratulations!
Cielo
help me with developing lesson plans for ELA or English
Jose
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
This cite allows me to provide practice for my students that isn't always just another worksheet. We all like the immediate feedback that this site provides.
Daire M.
Identify resources staff can use to develop relevant science curriculum
Brian A.
Assistance with after school program
Farae
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.
lesson plan for the topic mendel's law of inheritance
Eric C.
CK-12 has been an incredible resource in my classroom to help improve student learning. Bell work activities, extension questions, supplemental practice problems, and application graphics have all been utilized by myself and my students. Thank you for all
Alexander Fd.
Hi! I have used Ck-12 to supplement the resources provided by my school district for years. Eventually, CK-12 became a resource that is recommended by my school district. Congrats and best wishes as you celebrate your 10th anniversary. Also, thank you!
BC
I am a first-year chemistry teacher in an under-funded charter school. Our books are almost 10 years old and our lab doesn't have a complete stock. While searching to remedy some of these challenges, I stumbled upon CK-12 which offers a solution to a semi-outdated text and no online option for students who have grown up in the technology age. Thank you for allowing me to add your site as a resource and have options for useful tools to teach my students. Your site helps to make me a better teacher.
Dr K