When I worked at MyEdu, I didn't actually sign on with the dev team originally — I worked on "the scraper team". We scraped college and university websites to get class schedule information: which classes were being taught, broken down by department and course number; by which professors; at which times on which days. If you're ever looking for an interesting challenge, I would encourage you to try getting this data.

Well-formed HTML is the exception rather than the rule and page navigation is often "interesting". Sometimes the school's system will use software from companies like Sungard or PeopleSoft, but there's customization within that... and of course, there's no incentive for the schools to aggregate this information in a common format (hence MyEdu's initiative), so there are plenty of homegrown systems. In short, there's no one-size-fits-all solution.

* NOTE: If you do attempt this, I insist that you teach throttling techniques from the very start. Some schools will IP block you if you hit them too hard; other schools have crummy infrastructure and will be crushed by your traffic. Scrape responsibly!