Testimonials

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

CK-12 Helps to Address Learning Gaps
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CK-12 Helps to Address Learning Gaps
CK-12 Offers Material Unavailable By Traditional Publishers
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CK-12 Offers Material Unavailable By Traditional Publishers
Every time I open CK-12 There Is Something New and Engaging
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Every time I open CK-12 There Is Something New and Engaging
Start Small or Dive Right In with CK-12
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Start Small or Dive Right In with CK-12
CK-12 FlexBooks® as Primary Resource in Algebra One Class
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CK-12 FlexBooks® as Primary Resource in Algebra One Class
Continue Learning After the Lesson is Over with CK-12
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Continue Learning After the Lesson is Over with CK-12
CK-12's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
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CK-12's Adaptive Practice Allows You to Identify Where Each Students' Gaps Are
Confidence in Connecting to Standards with CK-12
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Confidence in Connecting to Standards with CK-12
Easy to Update and Modernize Content with CK-12
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Easy to Update and Modernize Content with CK-12
Illustrations Come to Life with CK-12
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Illustrations Come to Life with CK-12
Easily Share Content with other Districts and Teachers with CK-12
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Easily Share Content with other Districts and Teachers with CK-12
CK-12 Has Revolutionized How I Teach
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CK-12 Has Revolutionized How I Teach

Comments from Educators

As a homeschooling mom, it's always a struggle to find comprehensive material that is logical and easy to understand. That is not guaranteed even when money is spent. This is science based with great links and supportive data.

DeeDee

I love the webinars; they helped me get my classes set up in ck-12 and helped me create my own textbook. Although I publish my own workbook I often assign extra practice for the students on ck-12.

Deb M.

Great resource for students and teachers

Dawn R.

Hi people from CK-12! First and foremost, Happy 10th Anniversary! You've really helped my science class by giving us great information and FREE learning textbooks! You truly were a godsend to my teachers here at school. Thank you so much creating this web

Davina

Thank you so much for your textbooks & question banks! The questions have provided a quick and easy way for me to give developmental assessments! Thanks for all you do, and I can't wait to see what more you have in store for this year!!

David T.

CK-12 is a great way for home-schooling.

David

It's helping my classroom with our space facts....

Dathian T.

It has saved our district thousands of dollars potentially allowing the district to use the money for other needs. It has allowed the students to use the book on their personal devices, but we also were able to print hard copies at reasonable prices to th

Darlene K.

ck-12 has made it possible for me to easily and quickly provide resources for my students at ALL levels! It's user friendly and student friendly! It's one of the 1st sites I visit because the content quality is consistently excellent.

Danielle D.

I can teach my kids a variety of subjects and topics. There is a lot of amazing material to help my kids in school.

Daniela

Comments from Students

Great resource to learn the most complicated topics in simple ways.

Sean M.

I really understand things. Thank you for making this site.

Sam

this program is awesome. congratulation on your 10th anniversary

Salome W.

cK-12 has helped me to practice questions for biology. Happy 10th Anniversary!!

Sally

It has helped me tremendously! I really appreciate using CK-12 because it helps me with my tutoring lessons.

Salima W.

THANK YOU Ck-12 . You made my dreams come true because due to you i stated leaning in a higher standard . I used to study only through books but you changed style of learning. thanking you again and wishing you on your 10th anniversary , may this organisation will reach to every child ...

Saifullah

we get an online textbook!!

Ruby

IT HELPED WITH ALL OF MY HOMEWORK!!!!!!!!!!!!!! We have our lessons on the readings and they have really helped me learn. There is an occasional grammar issue and a misspelled word but other than that the practices and all the other things are really good for a 6th grade children's science class!! By the way HAPPY ANNIVERSARY!!!!!!!!!!!!!!!

Sadie

I love the life science section and the practice really helps me study for tests and worksheets so now science is a breeze!

Rowan W.

Well ck-12 has helped me by a lot by helping me study with the usefull resources.

Rosie