Here is an interesting poll of K-12 educators about their awareness of open licenses and CC.
(Note that at the time I’m posting this, the sample size is pretty small.)
My own experience in surveying hundreds of people at ed tech conferences (a group that should have somewhat higher awareness than the education community at large) is similar to this; the majority (perhaps 60-70%) have no familiarity with open licenses or CC.
I’m doing my part to spread the word. I hope you are too.
CC awareness