I still don't see anything that justifies her termination in that article.
Remember, the district is restricted from publicizing reasons for termination - empl. privacy/union rules etc. The fact that other teachers & the principal evidently had problems with her, not just one or two nutsoid parents & a Taliban schoolboard, tells me a lot.
The claim that the schoolboard in Frisco TX would throw her overboard for taking kids on a preapproved field trip to the Dallas Museum is not ringing true.