Open source class scheduler

I was just wondering how useful would it be to have an open source class scheduler. I mean, create a GTK or Qt based scheduler using Hungarian Matching or some other Operational Research algorithm in order to schedule teachers and classes or other types of tasks.
I've seen commercial versions of around U$100.00, but I'm still not sure how much benefit it would be to the open source community.
I'm tracking this post's visits, so, the number of Google searches that lead here will be tracked and I'll decide if it's worth based on this number and comments to this post.
Thanks for your feedback