Testimonials

See the opinions of students and educators just like you. Select from the following to learn more.

The Awesome Ability to Update CK-12 FlexBooks®
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The Awesome Ability to Update CK-12 FlexBooks®
Curating CK-12 FlexBooks® for Relevance and Engagement
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Curating CK-12 FlexBooks® for Relevance and Engagement
Using CK-12's Platform to Deliver Instruction on Devices
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Using CK-12's Platform to Deliver Instruction on Devices
Instantly See CK-12 Content in More Than 90 Languages
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Instantly See CK-12 Content in More Than 90 Languages
Using CK-12 in a Large School District
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Using CK-12 in a Large School District
CK-12 Simulations Connect Classroom with Real World Situations
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CK-12 Simulations Connect Classroom with Real World Situations
Student Engagement: Working Independently Using CK-12
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Student Engagement: Working Independently Using CK-12
Parents Love CK-12
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Parents Love CK-12
Personalizing and Blending Learning with CK-12
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Personalizing and Blending Learning with CK-12
CK-12 Is My Go-To Source for Classroom Material
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CK-12 Is My Go-To Source for Classroom Material
Illustrations Come to Life with CK-12
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Illustrations Come to Life with CK-12
CK-12 is User-Friendly and Fits Each School's Style
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CK-12 is User-Friendly and Fits Each School's Style

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.

Comments from Students

the videos were very infomational

Jordan Smith

CK-12 has helped me allot in learning science. i usually can't pay attention in class so this is what i use and it where i learn most of my science honestly and its nice neat orginzaed and just easy to use. so thanks for making this

Samandar Khusenov

Helps me with math and science and it is easy to use and fun thank you Ck - 12

Payton Spears

Ck 12 has helped me as a teacher to find resources

Vernica Lee

Thanks for helping me with science

Selena

ck12 has helped me by helping me learn science and know I am on a A-B on a roll. THANK YOU CK12!!!

Gabriella G.

It has helped me to be able to learn about what we have done in Chemistry, and tests me on what I know.

Dana Mcswain

My teacher was able to teach us great things through ck-12

Olivia Guerrieri

super helpful and easy to use

Ivana

The math and science is the best, and it lets me control when and how I learn. Overall the best homeschool education place.

Galayna Erickson

I use this as a secondary program on my online school!!! i do like it alot keep up the work guys

Serenity C

it has educated me very well , and helped me get into the the 9th grade.

Late'Ya Matthews

You made me get a 75 on a test

Im Mad

CK-12 helps me learn more within 15-20 minutes of science than 1 month of science class. Thanks CK-12!

Aditya Parulekar

Thanks!! This resource has been so helpful. My Science teacher uses a lot in class. This is my go to resource when it comes to Science!!

Yonnie Daniel

It has helped me learn and helped me on my classwork!!!!

Raeleigh-Grace Ruiz

You helped me a lot with science

Abel

They're Just SO GREAT!

Kailey Sterling

helped me learn problems faster

Vicente Tinoco

CK-12 has helped me in a lot of ways. You have helped my in science, math, and other subjects! Thank you!! I also appreciate that you have let me get all A's throughout 6th grade. Hope to study on this site more often!!!

Alayah Clark