Here are the schools with the winning team in each of the Oregon Envirothon competitions since 2005, and, if applicable, their international placing at the NCF-Envirothon held that year:

2025: Logos Public Charter School

2024: Logos Public Charter School

2023: Logos Public Charter School
International Placing: 13th

2022: Logos Public Charter School
International Placing: 27th

2021: Amity High School 
International Placing: 29th

2020: Amity High School
International NCF-Envirothon was canceled due to COVID-19

2019: Logos Public Charter School
International Placing: 25th

2018: Sutherlin High School
International Placing: 17th

2017: Logos Public Charter School

2016: Sutherlin High School
International Placing: 30th

2015: Logos Public Charter School
International: 44th

2014: South Salem High School
International NCF-Envirothon was cancelled

2013: Newberg High School
International Placing: 34th

2012: Newberg High School
International Placing: 26th

2011: South Salem High School
International Placing: 23rd

2010: Newberg High School
International Placing: 17th

2009: South Salem High School
International Placing: 26th

2008: Newberg High School
International Placing: 13th overall, 1st in Soils and Land Use

2007: Newberg High School
International Placing: 35th

2006: Newberg High School
International Placing: 51st

2005: Newberg High School
International Placing: 13th