So of course I was shocked to find a small study showing that science teachers are releasing lab organisms into their local environments. Since I am a science teacher myself, I feel comfortable asking how any self-respecting science teacher could do such a thing. Of course, the article states that "many teachers were mortified" when the consequences of their actions were pointed out to them- well, they should be! It appears that this is yet another area where a little extra teacher education is needed.
And yes, I did once spy an iguana crawling along the side wall of a suburban mid-Atlantic school while on an outside expedition with my students. I was struck speechless at the time, but boy did they get an earful about invasive species during the next class!