Que tal um plugin que gera certificados para os alunos.
Moodle 1.6: http://download.moodle.org/plugins16/mod/certificate.zip
Moodle 1.7: http://download.moodle.org/plugins17/mod/certificate.zip
Moodle 1.8: http://download.moodle.org/plugins18/mod/certificate.zip
Moodle 1.9: http://download.moodle.org/download.php/plugins19/mod/certificate.zip