A bus carrying 48 students from Crescent College in Limerick has crashed near Westport in Co Mayo.
The driver of the bus and six students are being treated at Castlebar General Hospital.
The rest of the group including four teachers have been discharged from Castlebar General Hospital after a precautionary examination.
It is understood the bus, which was coming from Achill, was pulling into the side of the road at Mulranny to let a larger vehicle pass when it toppled into a ditch.