The teachers in Brazil said they would not give tests that did nothing to help their students.
They would not give tests that harm their students by giving them demeaning labels.
Testing is not teaching.
They said they are professionals and cannot be driven to do things that are wrong and violate their professional ethics.
Remember the Hippocratic Oath: “At least do no harm.”
Teachers must do the same as a minimum, to protect the children who are in their care.