What are my rights in this situation? [View All]

[lightningandsnow]

I'm president of the gay-straight alliance/social justice club (I'm thinking of renaming it to that) at my high school.

We're booking guest speakers for next school year, and one of them is speaking about a topic that is quite controversial. (I'm not saying what it is - I'm not in the mood for flame-warring at the moment). I feel that I might face a lot of friction from the school administration because of the topic. What are my rights here, in terms of free speech and the like? Better yet, how could I frame it so they don't say no?