We use MediaWiki for
team1640.com. This allows any of the student and mentors to edit pages and add content. It also allows us to link pages together quickly so you can move from topic to topic. Lastly it gives me a way to roll things back to a prior state, so if "something bad" happens, I can easily fix it.
While we don't have the flash and dazzle (or dancing flying exploding pigs) of other sites, we do have a lot of content. I tell our students it's all about the content, not about the flash. Mediawiki will allow you to change the skins so you can get your team colors, etc.
We have 182 pages of content (text information pages) that have 1284(*) pictures and or documents attached (embedded) into them. I'd say that 99% of our pictures have captions attached to them (who, what, etc) All of our prior year engineering documents are on-line.
This year we will make daily updates to the build season info. We will try to capture what happened on the prior day of build and what is planned for today's build. Each sub-team (electrical, mechanical, drive, etc) will post what their group is doing.
I highly recommend Mediawiki for site management.
(*) 1180 pictures are the last five years of build / compete. We try to put up just the good pictures rather than uploading the 15,000 that get taken every season.