My response would have been: “No, I do not give permission. If you suspend my child, I must give you fair warning. I will sue you. Not the school district. You. No, you will not be protected from my lawsuit since there is no local, state or federal law giving you the right to violate me or my child’s constitutional rights. Your insurance company, assuming you even have one, will not cover you in this instance.” (I have no idea what my chances in court would be, but I would honestly sue the teacher.)