I think the easiest way to use Flash is to integrate it with HTML. Having all your content in HTML pages viewed in iframes or frames makes it much easier to update, and viewers can see the update too.
If you don’t know how to disable the cacheing of your .swf file, repeat viewers won’t see the updated content, which is where HTML comes in. If it doesn’t refresh the comment automatically you can just hit the refresh button and voila, everything is updated (doesn’t work like that with .swf files though :-\ )
And since Dan is right about the content over looks, I think you should use the HTML method of content. School sites have to be updated a lot (I know, I started my schools site from scratch and had to get ALL the info for everything, including extracurricular activities) so it would be easier to have HTML content.
Just a suggestion:)