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Sam Merrill opens Horizon Middle School as the first principal. The school was the 2nd middle school operating in Falcon School District 49, serving 6th-9th Gr.
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In 1988 Horizon served grades 6th-8th as it currently does now.
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Richens Smith was principal for 8 years.
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Lydia Constant hired as new principal at HMS and was there for one year.
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Jay Hahn became principal in 2000 and was the leader at HMS until 2003 (3 years).
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Addition of new 8th grade wing at HMS.
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Michelle McAteer was principal from 2003 to 2005.
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Dye warner was principal for the 2006-2007 school year (Greg Moles was the AP for that year).
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Horizon began the process of investigating and implementing the International Baccalaureate MYP program.
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Current principal Greg Moles started in 2007.
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School applied and recieved a $150,000 grant for school improvement plans.
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HMS IB aurhtorizationHMS was authorized as an official IB school.