As far as I can tell, you didn't do anything wrong. It's a free country and you have free speech and can contact whomever you wish to discuss what you consider a problem with their teaching material.
You went to the school prior to contacting parents.
That's what I keep saying but I'm being told I'm wrong and everybody hates me and even if we don't leave the school that they will probably kick us out. I'm not sure that's a bad thing I just wish my husband would support me. He's taking everybody's side but mine.