On Wednesday morning Chippewa Fire District Deputy Fire Chief Cory Jeffers the incident happened at the Bushel and a Peck Orchard in Chippewa Falls.
Two hay wagons with kids and adults were being pulled by a tractor when the rollover happened.
Some of the children were students from St. Mark Lutheran School in Eau Claire on a field trip.
SEE ALSO: 8 students injured in rollover school bus crash in Wisconsin
Twenty five people had to be taken to local hospitals. Of that 25, it is unclear how many were kids and how many were adults.
All other children were reunited with their families.
Chippewa County Sheriff Travis Hakes confirmed there were no fatalities.
Three people suffered life-threatening injuries; five more have serious injuries and nine were taken to nearby hospitals by ambulance, the sheriff said.
One person was airlifted for care.
Hakes did not specify the ages of those injured.