Need help to do a survey? Lyndon Sharp from the NSW Board of Studies recommends that students use http://www.surveymonkey.com/ to undertake surveys for such school assignments as the Senior Geography project. This site not only helps you design the survey but also analyzes the results with graphs and charts.
Need help to take a poll? also recommended from Lyndon is http://www.polldaddy.com/ for high school students to use to make and analyse polls.