Their site has a section that allows you to select the state you live in, the subject you teach and the grade level you teach. It will then provide a textbook aligned to state standards. You can then print that textbook out or share it digitally with your students. Students can even create accounts and get interactive lessons and simulations in the curriculum.
Another great feature of CK12 is the ability to create flexbooks. What this allows you to do is to pick and choose which standards are a part of your book, meaning you can direct the flow and path the curriculum takes. These books can be downloaded as PDF, shared online with students or printed out. It becomes your book, and you have control!
I think this is a great tool that you and your school should definitely be checking out. I have other content resources as well that I’d be happy to share with you and your school. Also, if CK12 is something you’re interested in, I’d be happy to come out and provide training to your teachers on how to get the most out of this free tool!
Please contact me with any questions you might have.