Teachers absolutely have to be controlled. The shit people believe nowadays should stay away from educational system. I do not want intelligent design to be part of biology class only because a teacher decided "to expand views of the students". But it works in both ways. Progressives topics should be avoided too if they are not part of the program. I do not want CRT, for example, to be thought to 8 graders either, especially in literature classes, unless it is part of the curriculum. There is acceptable program, and teachers should go alone with it.