Too many cooks spoil the broth -- ProverbThere is only so much time in a teaching day. There are only so many things a teacher can do. Adding to the already overstuffed schedule doesn’t get more things done, unless they are done less than well.
Teachers classroom activites fall into three main groups: instruction, organization and discipline. If one of the groups expands, one or two of the others must suffer. This is not nuclear physics.
If kids have not been sufficiently socialized at home to contribute, or at least, not to interfere with instructional or organizational activities, then the teacher must waste the instructional time of the cooperative students on disciplinary action. This is not nuclear physics.
If school districts insist on dumping more and more faddish items into the curriculum, then less and less gets done. The essentials suffer. The kids miss out or do not develop those skills needed for their later years. This is not nuclear physics.
If administrators interrupt classes with non-urgent public address messages, or with special un-preannounced assemblies, it wastes teacher time in helping along his or her charges. This, also, is not nuclear physics.
What is so hard about applying common sense in schools?
------To investigate this issue further see See "What Can a Teacher Do?"