“A major cause of teachers getting fired is that they think their podium is a political soapbox to rant from”
Which isn’t the case, given the facts in the article.
Facts which even the article notes are his opinions. Other info about Tim Latham, which might possibly explain why he resigned from his old school:
http://ella.arkansasonline.com/news/2007/jul/15/some-teachers-resist-new-plans/
It sounds like he has a habit of complaining to the media.