This series held my interest for a while with some of the side stories being quite tragic. It was a long time ago that I watched it and I remember that I found some of the scenes to be lacking in consistency especially as to how powerful the zombies are when they are trying to get out of the one classroom. While it was well done and I appreciate Korean films and series, I remember being ultimately kind of disappointed with teh way this one ended as well.
Overall still better than most of the series that are out there. Especially other zombie oriented series.