Three brick workers were hurt when their scaffolding collapsed Thursday afternoon.
Janesville firefighters responded to the accident at Harrison Elementary just after 1 p.m.
A captain in the fire department says the workers for general contractor J.P. Cullen and Sons were building an addition on the school.
All went to the hospital with non–life threatening injuries. And children were moved from one area of the building to another as a precaution.
Firefighters say wind may have been a factor in the collapse.
OSHA is investigating.