<p>Does anybody know if the science olympiad cds and guides sold on the national website are helpful?</p>
<p>I never used them when I did Science Olympiad; scratch that, I may have used part of the official guide when I did Ecology. But in the long run, it never really helped us–we would have placed far better if we had, for example, studied out of a textbook. We ended up studying information that never came up.</p>
<p>They would help you get a start: i.e. what to study, the basics, etc. scioly.org does this pretty well too</p>
<p>They will not give you the depth of information needed to really do well at events, especially at the state/national level.</p>