I agree with opebo. In the end, this is just prudery. America is so immature when it comes to sex it's unbelievable.
How is it "prudery" to say that you don't want to pay for other people's sex classes? Will you send me a check to pay for part of an oral sex class? How does $5 sound? That's not too much.... I'm sure you can afford it.
We publicly fund all sorts of education! This is a public institution. Sex Week certainly sounds like it would be more useful and productive than a lot of the other classes that your tax dollars pay for. This would probably be a lot of fun, too! Nonetheless, a few prudes get skirmish about it and there's no way it can be done. Because, you know, a lot of people don't approve of sex... which is inherently pretty stupid.