||The PHP Scalability Myth|
|Subject:||Scalability in the possible real world|
Response to: Scalability in the possible real world
this sounds a lot like the PFP LMS, a project I am curretnly working on. For me the choice is different in this situation. I think that there are plenty of open source solutions (PLONE, and in PHP XOOP or PHP Nuke) that can lift the abstaction and elminate reinventing a lot of features. They are extensible and could provide a good starting point for a project of the type you have described.