Looking up the District Report Card on a local school can give you more information on how the school does in terms of the others in the district. The District uses the same curriculum in all buildings, and the information will be a year behind. Since the curriculum is the same, differences in the population and teachers in the school can account for the differences.
Go to the State Department of Education Website: www.doe.sd.gov/
Under the Parents tab on the far right click on Reports.