At around 1 p.m. Saturday STARS Air Ambulance responded to a bus rollover near Calders Dock, MB.
Chief Medical Officer Myron Thiessen said the bus was carrying 25 children and three adults.
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Police say the students were between 12 and 15 years old and may have been attending a musical event.
Two people were airlifted to Winnipeg hospital with non life-threatening injuries. All other students were transported by ground ambulance, or private motor vehicles as a precautionary measure.
Thiessen said icy roads on PR 234, approximately 2 kilometres south of Pine Dock were a factor in the rollover.
The scene is now clear, and the investigation is ongoing.