I absolutely oppose all tax support for charter schools, and tax support for religious schools. I see where the CEA is coming from, but they also are pretty lame when it comes to actually doing politics. But it isn't the CEA that sent this flyer out. 
Which "Every Student Succeeds" organization are you referring to? ESS Aurora is only that. Be more accurate.
I might add that most of my fellow (former, haven't taught in 20 years), are also pretty lame at politics. Go look at the CEA Facebook page, and it is usually very slim in comments. The flyer itself is a piece of deceptive crap, and I would like to know who actually sent it out, as the Denver Post is conflating something here. It's such a bad flyer, that it looks very localized.
I am a former co-president of my CEA education association, way more politically knowledgeable than many Colorado teachers, one of the few to post comments on the CEA's Facebook page, and blown away by this crappy flyer. I also have a hard news background.