Testimonials

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

CK-12's Flexibility and Accessibility
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CK-12's Flexibility and Accessibility
CK-12's Mission Drove EPISD to Share Materials with Others
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CK-12's Mission Drove EPISD to Share Materials with Others
CK-12 Availability: No More Excuses
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CK-12 Availability: No More Excuses
"I Use CK-12 Videos Whenever Possible"
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"I Use CK-12 Videos Whenever Possible"
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
Why Mrs. P Loves to Use CK-12 in Her Classroom!
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Why Mrs. P Loves to Use CK-12 in Her Classroom!
Students Rely on CK-12 Flexbooks®
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Students Rely on CK-12 Flexbooks®
Start Small or Dive Right In with CK-12
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Start Small or Dive Right In with CK-12
Personalized Learning with CK-12
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Personalized Learning with CK-12
CK-12 Helps Student Go Deeper with Learning
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CK-12 Helps Student Go Deeper with Learning
The Power of CK-12's Highlighting Tool and Word Definitions
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The Power of CK-12's Highlighting Tool and Word Definitions
The Innovation of CK-12
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The Innovation of CK-12

Comments from Educators

CK-12 has provided our school with free science texts and has given my students the opportunity to publish their writing online in the Understanding Biodiversity book. Thank you!

Amy H.

helped me learn how to do my math better

Brady

Absolutely an amazing experience. I love that I can customize the textbooks to include what I believe is relevant in the order that I feel is a good flow. Thank you for saving my district so much money!

Jason W.

with lessons for the 1st grade classroom

Loralei B.

ck12 has help me by making me study even harder i am really excited that i am using ck12 and i would give you all a congradulations your 10th anniversary you did work hard for this

Gabriela C.

This is my first time at your website. I have demystified mathematics and looking to create and publish projects that enable students to become accountable for sense making to overcome previous barriers to progressive math studies to qualify with problem solving skills for 21st century careers from math-based STEM field curriculums for starting salaries of $60,000.

Jerry R.

NOT AT ALL

Gracie

many teaching resources are getting this site for me

Jaleesa

I have been able to take the real world applications and interesting topics from ck-12 and incorporate them into my science lessons.

Lauren H.

It's a very fun and interactive way to teach and sum up the boring information teachers repeat again and again.

Joe M.

I have used parts and all of many lesson plans. Thanks.

Cathryn B.

I am a high school biology and chemistry teacher. I assign ck-12 as a resource for students who struggle with concepts. I love the Real Life articles. The students get to understand why science is important. Thank you

Laura S.

I have greatly appreciated the flex books and the connected practice sets! Those practice sets have been great help to my students that need just a little more time with material, and it saves me time from having to create more material resources myself!

Christine

I have used the lessons to help my ELL's, for introducing lessons, for tutoring, and for enriching my lessons. Thank you!!!

Fernanda S.

CK-12 has helped my students access current science content as we implement the Next Generation Science Standards.

Barbara W.

Provides plenty of well structured lessons

Janet

You have helped my teachers by provided a large and reliable source of information for them, as well as a cite that their students can go on and explore. In turn, that helps me.

Alyssa

I am a special education teacher, I use information to help kids understand concepts in the biology class.

Jason V.

Comments from Students

you helped me with science grade

Faith

you helped me pass algebra 4

Jonny

This site helped me that I am passing all my grades and I appreciate all the help.

Matthew Abadam

You helped me look and learn about minerals and many more things. HAPPY ANNIVERSARY!

Candace

Thanks!!!!!!!!!!!

Yoselin Huequis-Ayala

I am a student, currently getting my Masters in Special Education and I have found that the resources available at ck-12 have inspired me and stimulated a fresh approach to teaching and learning, particularly for kids with special needs and for kids needing enrichment resources.

Patty Adams

it helped me understand physics more.

Jamessantana

well it help me to do my cornel notes and to get the work i need

Abdiel

When I have problems in science, cK-12 is there to help.

Alan Mao

My school curriculum is onilne, and they direct me to you guys for science, and it's actully fun to learn science now!

Maeryn

You helped me by learning how atoms are and how small they are. It's crazy on how small they really are.

Falynn Peterson

CK-12 Helped me better understand things that were spoken in-class.

Zach

CK-12 Provides excellent learning tools and essentials and allows me to access it online for free.

Sean Finn

Hello!!!

Venku

OMG!! cK-12 has helped me with sooo many assignments at school!! When my teacher assigns me a page from this website, it helps me with things I don't know, and when I take a quiz afterwards, I get a great grade!! Thank you cK-12!! :D

Wolfesess

I love to use this website for 7th grade science it helps soooooo much i love this website.

Ian

y'all helped me learn about minerals.

Izzy

CK-12 has helped me understand chemistry better and i want to congratulate and thank you for your services

Abdullah Jamal