“Justice League” was first released on Nov. 17, 2001 and it ran for nearly three years ending in May 2004. Around this time “Batman:The Animated Series” and “Superman: The Animated Series” were also being made as a side storyline to the Justice League plot.

Recovery classes were made as a strategy to deal with the high failure rates that schools have. And they encourage students who are at-risk to retry a course for a better grade.