The children, studying in class I to III, were on their way to the Cantonment School at Wellington about 20 km from here when the van developed brake failure near Kalpuli, police said.
Showing presence of mind despite losing control of the van, 38-year old Vicent brought it to a halt by steering it into a heap of sand on the other side of the road.
However the van turned sideways and the students and the driver suffered injuries, they added.
The injured have been shifted to the Cantonment Hospital and Government Lawley hospital, police said.