I have data from the 2005 survey of U.S. National Science Teachers Association members posted on Lessonplans.com's home page. I attempted to update this data with the results of the 2006 survey but could not find it. This is 2008, it seems to me that it should be completed by now; a reasonable person would think so. I discovered there are still many teachers that have not responded to the survey. I'm at the point where I think that some percentage of the teachers will never respond. If the percentage is too high [I don't know what that percentage is], then the survey data becomes invalid.
An unwillingness to respond says something about science teachers and I don't think it is positive.
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