eLearning

There are some
http://download.moodle.org/modules/integrations.php
http://download.moodle.org/download.php/modules/drupal_moodle.zip

Already a discussion on:
http://drupal.org/node/54605

Central space for Drupal & ED:
http://drupaled.org/

A plan for aTutor:
http://www.atutor.ca/atutor/features.php#46

And the Drupal quiz.module
http://drupal.org/project/quiz

But nothing real well working yet.