I have a draft up at [[Wikipedia:School and university projects - instructions for students]]. Alterations appreciated, and anyone else willing to help please stick your name down...
I think the idea is good, it's just that... Well. The tasks proposed are a bit dreary. Personally I have literally never created an article because it was requested. I prefer to write about things I know about, or at least know the context for, and the requested articles never seem to be in my field of knowledge. My guess is that I'm not unique in this respect. (I have, though, participated in the Missing Articles project, writing on Scandinavian topics.)
The standard welcoming messages with the open tasks also seem rather unattractive to me. Very few people join Wikipedia because they want to fix syntax or clean up bad prose on subjects they don't care about. This comes later when people mature as Wikipedians.
Regards, Haukur