although as you're referring to Drupal we know you mean "Content" instead of "Course"
it's probably good to define "CMS" - it's occasionally used for "Course Management System" and "Content Management system" which can cause a lot of confusion! 
although as you're referring to Drupal we know you mean "Content" instead of "Course"
although as you're referring to Drupal we know you mean "Content" instead of "Course"