Schools in Sumner, Nebraska, the US. Schools locations in Sumner, Nebraska. Find the nearest schools locations, near you. All types of business services ATM Bank Finance School All schools in Sumner Junior/Senior High at Sumner School +1 308-752-2925 205 East 5th Avenue, Sumner, Nebraska 68878 Write a review Phone Directions SEM Schools School +1 308-752-2925 205 East 5th Avenue, Sumner, Nebraska 68878 Write a review Phone Website Directions