Didn't the headline distort the results of the survey? I didn't see anything about teaching 'both sides'. I only saw that the surveyed wanted to teach the scientific evidence for and against evolution. That doesn't mean teach another side.
Depends on what you mean by "both sides". For and against the theory of evolution, or for some other theory, and against evolution. But you are correct that the questions asked in the survey and the results don't seem to support the conclusions that are being arrived at.