The Wartwood School was Wartwood's schoolhouse. It was destroyed in an incident with giant millipedes in the year prior to the events of Amphibia, and hasn't been rebuilt since.[1]
Former students such as Ivy Sundew are shown to be happy about its destruction and tend to use the ruins as a playground, despite the continued dangers of the millipedes.[1] During Hop Pop's campaign for mayor, he brings it up as one of the issues with Mayor Toadstool's term.[1]