There is more to school, and to life itself, than data. There are times when we must shield ourselves from being overwhelmed by data. The purpose of the Teacher Data Shield is to protect teachers from too much data, from data used inappropriately, and from data used to justify and quantify things that cannot be measured.
This is a Teacher Data Shield. It is not a sign saying, "no data". It is simply a shield, to protect teachers from the misuse of and obsession with data: