you're asking how to keep up with your students' blogs? I have a few tips and hoe this is what you're asking for.
First of all, create a blogroll in Bloglines. Add the Bloglines button on the toolbar, and open each of your student blogs, adding them to your blogroll in a specific folder that you've created in Bloglines. This will make it possible for you to see any updates on their blogs. Perhaps you already did this?
Read the help files in Bloglines to learn how to export this list of blog feeds - you save it on your PC as a text document that you name myclassroll.opml
Now the trick is to find the place for locating where to add this blogroll opml file to your blogger template in the side bar script. This sounds a bit tough, but it can be done and there must be an explanation somewhere around in this very YG - I know because I did it a few times but already forgot the exact step by step workaround...
Who's our Helpful Chap jumping in and pointing this out?
Another thing you might want to do is to invite your participants as members of your co-blog (if you did not do so yet, you could just create a new one - it is possible to manage more blogs from thesame user account), Once they have accepted this invitation they can decide to write in teh co-blog or their personal blog. And how do you do this? Open Dashhboard/Settings / members and invite your students one by one, using their email.
PS If anyone still wish to get invited, do not hesitate :-)
PS PS Now that you're around please leave your footprint on our co-blog so that we have something to show off with for our later reference :-)