Schools in Diamond, Missouri, the US. Schools locations in Diamond, Missouri. Find the nearest schools locations, near you. All types of business services ATM Bank Courthouse Finance School All schools in Diamond Diamond Elementary School School +1 417-325-5189 401 South Main Street, Diamond, Missouri 64840 Write a review Phone Website Directions Diamond High School School +1 417-325-5188 401 South Main Street, Diamond, Missouri 64840 Write a review Phone Website Directions Diamond R-IV School District School +1 417-325-5189 401 South Main Street, Diamond, Missouri 64840 Write a review Phone Website Directions