You might also want to visit the official SchoolTool project home page.
Subversion (boring, usable by Subversion)
To check out the latest source code, type
svn co http://svn.schooltool.org/schooltool/trunk/schooltoolIf you are a developer with commit access, use svn+ssh instead, using your login for the server
svn+ssh://login@source.schooltool.org/svn/schooltool/trunk/schooltool
ViewCVS interface (fancier)
Trac source browser interface (some prefer it to ViewCVS)
We do not currently use Trac's wiki, roadmap or issue tracking. Instead we have an existing issue tracker and the roadmap/wiki documents are kept on SchoolTool's Plone site.