In 2001 the North Winneshiek Community School District ended its high school program. That year it entered into an agreement with Decorah CSD to allow students from its boundary to attend Decorah High. Effective July 1, 2018 the North Winneshiek district consolidated into the Decorah district.
In September 2025, Decorah High School partnered with Luther College (Iowa) to award students with preferred admission and scholarship opportunities. To be awarded preferred admission and an associated $500 award, students must have a minimum unweighted GPA of 3.25 and complete Algebra II by the end of their junior year.
Athletics
Decorah is a founding member of the Northeast Iowa Conference, and participates in the following sports:
Cross Country
Boys' 15-time State Champions (1957, 1958, 1959, 1964, 1966, 1967, 1968, 1972, 1974, 1976, 1977, 1978, 1990, 1992, 2012)
Girls' 8-time State Champions (1976, 1980, 1982, 2007, 2012, 2013, 2014, 2016)
Volleyball
Football
5-time Class 3A State Champions (1974, 1987, 1988, 1989, 2012)
Basketball
Swimming
Wrestling
Girls' State Champions (2024)
Track and Field
Boys' 2-time Class 3A State Champions (2004, 2012)
Soccer
Tennis
Boys' 4-time Class 1A State Champions (1996, 1997, 1998, 2015)
Girls' 5-time Class 1A State Champions (1994, 1998, 1999, 2000, 2003)
Golf
Boys' 2-time State Champions (1968, 2012)
Girls' 3-time Class 2A State Champions (1981, 1982, 1984)
Baseball
3-time State Champions (1970, 1990, 1991)
Softball
According to an online database compiled by the Des Moines Register, Decorah has won 46 state championships, which is believed to be sixth most statewide, most among schools classified as 3A or smaller, and more than twice the number of any other conference school.[citation needed]
Decorah has won the Northeast Iowa Conference All-Sports Championship ten times since its creation in the 1976–77 school year.
Former Decorah baseball coach Dennis Olejniczak has the second most wins of any high school baseball coach in the United States.
Since 2004, the Decorah girls cross country team has been a powerhouse program, appearing in 13 out of 14 State 3A meets (2004–2017) with 12 top-5 finishes and state titles in 2007, 2012, 2013, 2014, and 2016. The team currently holds the longest consecutive championship streak in the Northeast Iowa Conference with an active streak of 15 consecutive titles.
Awards
Decorah High School was awarded a National Blue Ribbon School in 2011, and again in 2025.
Decorah has been awarded the Bank Iowa Challenge Cup for the 2007–08, 2008–09, 2009–10, 2011–12, 2012-13 school years.
Bond issue
The voting population of Decorah approved, in 2010, a referendum on a roughly $20 million bonding bill to pay for a renovation of Decorah High School. It was approved with a 69% public "yes" vote. Changes will include a new gymnasium, completed in the spring of 2012, and a complete renovation of the entire building, including updating and replacing the heating, cooling, electrical and communication systems, repairing the roof, creating a "safe room" for security and safety during severe weather, and restructuring the cafeteria and gym areas.
↑"Comprehensive Plan"(PDF). Winneshiek County. December 2016. p.91. Retrieved April 6, 2020. - (PDF p. 92/512) - Since Decorah CSD and North Winneshiek CSD are now in the same district, unincorporated places from both are included here.