For starters you don't use absolutes like "disproved". All you can do is say "the bible says X and the observed data suggests Y" (with a critical examination of how we interpret the data).
The objective should not be to convince students that they are "wrong" to believe in creation but to give them the tools to examine their beliefs critically. Any suggestion that students should be taught that creation is a valid alternative scientific interpretation of observed data is absurd.
Agreed.
I want to suggest an alternative question to the one in the current thread title. (The one in the current thread title is a bad thread title because every participant in the thread would say "no". To put it as the thread title confuses people.) The alternative question I would put forward is,
"Should creationism be discussed in science class?"
I would say yes, but I think the current state of legal interpretation in the US makes it very risky to do so.
Some years back I remember a thread I started following a case where a teacher was sued after he called creationism "superstitious nonsense" in class. He lost, although he won on appeal, but it was kind of a marginal victory. The interesting thing was that the most vehement anti-creationists on this board tended to support the lawsuit. The mere possibility of mentioning creationism in an educational setting was enough for them to throw the teacher under the bus. (ETA: I remembered, the teacher in question actually joined the forum at one point.)
I think creationism should be discussed in science class, time permitting, and used as a point to critically examine evidence. Is the Earth 5 billion years old, or 6,000 years old? How can we tell? Could the Grand Canyon, and lots of not so grand canyons, have been formed by a massive flood? What does the evidence say? What kind of rock formations would you expect if the world was covered by water, which then evaporated quickly?
I think it's a good way to get people thinking about science, as opposed to just parroting answers to get an A on the test.