Schools in Union Center, South Dakota, the US. Schools locations in Union Center, South Dakota. Find the nearest schools locations, near you. All types of business services School All schools in Union Center Atall Elementary - 17 School +1 605-269-2264 Atall Road, Union Center, South Dakota 57787 Write a review Phone Directions South Pleasant View School School Union Center, Union Center, South Dakota 57787 Write a review Phone Directions Sunny Slope School School Union Center, Union Center, South Dakota 57787 Write a review Phone Directions