 In the early 1990s, Plymouth High School, located in Plymouth, Illinois completed the consolidation to make Southeastern High School a public facility serving students from the three villages and other outlying areas.On March 3, 2006, Southeastern High School was burnt to the ground after a fire that started in the Chemistry lab on the third floor, completely gutted the entire floor, resulting in floor collapse, and extensive water damage to the bottom floors.The fire started at approximately 11