>Averaged across the general student population, there was no statistically significant correlation between a school’s spending levels and its students’ academic performance in 27 of the 28 academic indicators used in the model. In the only category that did show a statistically significant correlation — seventh-grade math — the impact of spending more was very small.
Since 2007? That was long after we chose to leave kids behind
This analysis is rather weak, just a linear regression with 2 variables it seems. I'm not saying there's a direct link of school spending and academic performance but this is barely trying. Your average undergrad could've made a better study.
I'm not sure how to square that with the very well-studied result that areas with higher income tend to have better schools. Students from lower income brackets also do better than their income peers at schools in less affluent areas. And because local property taxes are a major funding source for schools, those are also the schools I'd expect to spend more because they have more.
Michigan notably does not fund schools through homeowner property taxes. I suspect that's probably the difference here and a reason we shouldn't use it as a representative example.