Mold issues cause Minnesota district to postpone first day of school

Wabasha-Kellogg has delayed school until further notice as the district addresses mold found in several classrooms.

The Minnesota Star Tribune
September 2, 2025 at 8:18PM
Empty classroom
Wabasha-Kellogg public schools has postponed classes at its lone building until further notice to fix mold contamination. (Alex Kormann)

One southeast Minnesota school district has yet to start school this year after mold was discovered in several elementary classrooms.

Wabasha-Kellogg public schools has postponed classes at its lone building until further notice to fix the mold issues, which cropped up over the past two weeks as district officials prepared for the school year.

An environmental testing team found elevated levels of common mold spores; workers deep-cleaned the affected areas last week but the process delayed ongoing construction.

Superintendent Nels Onstad said in a video released last weekend that the district, with an enrollment of 750, ran into challenges with the Labor Day holiday as it worked on short- and long-term plans to address the mold issues.

“This means more time is needed to complete the work and safely welcome students and staff back into the building,” Onstad said.

Onstad could not be reached for comment Tuesday.

The Wabasha-Kellogg building underwent renovations this summer as part of a $16.2 million project to replace its heating, ventilation and air-conditioning system, among other fixes including a partial roof repair, new windows, security updates and upgrades to several departments.

Yet, the rocky summer weather’s extreme heat and humidity from several large-scale storms caused the building to develop mold, according to the district.

Wabasha-Kellogg isn’t the only area school district dealing with mold. Plainview-Elgin-Millville officials told parents last week that they discovered mold on carpet inside the district’s pre-K-3 building in Plainview.

P-E-M has had the carpets deep-cleaned and is testing air quality Tuesday, with results expected Wednesday. Classes were in session.

Wabasha-Kellogg officials plan to share more information over the next few days as they eye a potential class start next week.

The delay will likely cause a few child care problems among local families, but residents appear to be taking the construction in stride.

“WE ARE STRONGER THAN THE MOLD,” one former student wrote in all-caps on the district’s Facebook page.

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about the writer

Trey Mewes

Rochester reporter

Trey Mewes is a reporter based in Rochester for the Star Tribune. Sign up to receive the Rochester Now newsletter.

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