You can't kill it. It's too good a story. It's also remarkably easy to dramatize. Part of it is that Dickens wrote good dialog. Part of it is that the tale has become an icon.
Scrooge is one of the most recognizable characters ever created.
It's broken into scenes, some short, some long. My initial idea in doing this was for use with a large class group. The class could break into small groups and each group could then select one section to dramatize. If you want to take it all the way to presentation using the whole class, have each character assigned a specific costume piece and let the children pass it from group to group as the characters progress. Needless to say, there are several excellent adaptations of the story.