• Softball: 2012
• Quiz Bowl Jr.-Sr.: 2012-2013
• Quiz Bowl Jr.-Sr.: 2013-2014
  
• Wrestling: 2013-2014
  
• Boys Cross Country: 2014
  
• Wrestling: 2014-2015
  
• Girls Golf: 2015
  
• Quiz Bowl Frosh-Soph: 2014-2015
  
• Boys Basketball: 2016-2017
  
• Quiz Bowl: Frosh-Soph: 2017-2018
  
• ​Girls Track: 2018
  
• ​Speech: 2021
  

Conference Runner-Up

Conference Champions

​O'Neill Junior-Senior High School

• Boys Golf: 2012
• Girls Golf: 2013
  
• Girls Golf: 2014
  
• Quiz Bowl Jr.-Sr.: 2014-2015
  
• Wrestling: 2015-2016
  
• Boys Basketball: 2015-2016
  
• Quiz Bowl Frosh-Soph.: 2015-2016
  
• Boys Track: 2016
  
• ​Boys Track: 2018
  
• Girls Track: 2021