As a parent, I meet with the teacher MAYBE twice a year for perhaps 10 minutes. I couldn't pick out the principal if I passed the person in the school hallway. Since I am responsible for the child's welfare, I NEED TO KNOW THEM.

Expulsion is less than desirable than striking my child...really??

I'm not suggesting that a teacher should not intervene, but hitting a child in the process is NOT acceptable. If, as a parent, I cannot hit my child, then certainly as a teacher, you should NOT be permitted either. Intervening should NOT include striking a child

My children have told us plenty of stories of situations when, at recess or before school, children have been bullied with a teacher in full view and nothing was done.  I have, from time to time, brought my children to school and witnessed  similar circumstances.

Lately, in the news there have been plenty of articles highlighting teacher and school administration misconduct. 

As such, I'm skeptical of your intent.