Stark & Subtle Divisions (omeka.net) was created as a collaborative class project.
Gothic Past (omeka.org) showcases gothic architecture and sculpture in Ireland.
Omeka is a free, open source, online digital curation platform that allows users to create museum-like collections and exhibits with images, sound, and/or video content. Omeka is easy to learn and requires very little technical expertise. Users can integrate extra features like timelines and maps to add context to their collections by selecting from a large library of optional plug-ins. Omeka can be used for individual academic projects or can be integrated into course assignments. For help working with Omeka or integrating the tool into class projects, please contact Catherine Newton, Digital Curation Librarian.
A list of sites created as class projects: https://omeka.org/codex/Teach_with_Omeka
A helpful article from The Chronicle of Higher Education about one professor's advice: http://www.chronicle.com/blogs/profhacker/teaching-with-omeka/26078
Penn Libraries' guide to using Omeka in the classroom: http://guides.library.upenn.edu/omeka/teachwithomeka
A USC professor's reflection on her experience using Omeka in the classroom over a period of 3 years http://www.nyu.edu/projects/sanger/CDH/Marsh-Omeka.pdf