GOffice (http://goffice.com) is a web based office suite. It has word processing desktop publishing, presentation and spreadsheet applications. User and create documents online and save them as a PDF file. That file can be shared with other people.
This tool would work well in a school setting for students who do not have access to a computer to complete assignments. Also it is a good tool for use in distant learning. Students may be using various platforms to create their documents, particularly word processing. Using the GOffice word processing application would allow students to be able to create the document, save it as a PDF file and email it to the instructor. Since the PDF format is widely used, the instructor will be able to open and view (or print) the document alleviating the need to for having several different word processing programs.