Answer:
Um... Studies have shown that standardized testing increases the drop-out rate. Students in the bottom 10 percent of achienment are 33 percent more chance to drop out of school in states with graduation tests. Standardized tests are a spotlight that helps school leaders see what effect schools are having on students. With that information they can make changes to address students' needs.
- Hope this helps, if this isn't what you're looking for then I appologize in advance.