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

At a time when we were not able to continue paying for private instructions, we found this site and it was our salvation. We valued the set up and the freedom it presented to design the best course of action for 8th grade studies. Now moving on into 9th grade studies and more diligent record keeping, we are continuing on at the 9th grade level.

James L.

Hello guys. Very Good Job, Happy 10th Anniversary

Izzy

many teaching resources are getting this site for me

Jaleesa

Teaching

Jacqueline S.

We use cK-12 for our high school Science and math curriculums and the students love and the teachers find it easy to use and an enhancement over traditional textbooks.

Jack

First year using completely digital books in 7th science thanks to you! Awesome!

J Daniels

It has helped me with very fun and creative activities to deliver meaningful lesson to students of different learning abilities.

Isela

I love science and the online books are so easy to access! I love the ck-12 website home page thing! every thing is so well organized! I just love ck-12!

Isabella

It has help students grasp concepts via video and plix shown by increased test scores on weekly exams and it has help me save time gathering these resources.

Iris H.

I used some of the lessons for my national board certification. Lessons from ck-12 have helped my students to understand concepts from readings and videos provided. Love Ck-12

Holly D.

Comments from Students

helped me learn about simple machines

Giselle

CK-12 has helped me with my work in science class and helped me understand how rolercosters work

Gillian

it has helped me by learning things that i don't know

Quagmire

you have helped me in science by letting me finish my work quicker

Mel

Excelente herramienta para fortalecer los temas vistos en clases..Sigan así C:

Gerardo

it has help me learn new thing and continue my growth in science

Francisco D.

ck-12 helped with my music career.

Gerard W.

This site has helped many of us to better understand the world around us. Without you cK-12 I dont think I would have never have understod the material better than I already know

Francisco

it has helped me to understand my subjects easier

francis

It has helped me learn phisics

Flannery C.