This graph makes the SAT drop look worse than it is and speaks to the demographic on Lemmy, smart people who see a drop in broader test scores as a broader drop in intelligence. This isn't what is being shown. It's showing how when the high school dropouts are included the scores drop 150 points so we need to improve the part of education that serves the people who were excluding themselves from graduation.
We can address the primary factors of drop out/low scores by solving wealth inequality and food insecurity.