Young indigenous Navajo Young teacher checking her students work
Winston-Salem, North Carolina, United States

We chose a box plot for this visualization to make the median household income standout, as we are able to see clear outliers and patterns. This is important for our project because we are trying to analyze how median household income correlates with state expenditures and, consequently, its impact on student education.


Highest: The Northeast region reports the highest median household income overall. Within the Northeast, the Middle Atlantic division (including states like New York, New Jersey, and Pennsylvania) ranks at the top.

How do states differ in their expenditures for education?

This data on regional household income and per state expenditures directly support the thesis by showing how broader economic and policy-driven disparities influence education funding. The Northeast, with the highest median household incomes, tends to allocate more resources toward public education, contributing to higher teacher salaries. In contrast, the South, particularly the East South-Central division, has the lowest household incomes, which correlates with lower public school teacher salaries and reduced education funding overall. This reveals systemic disparities in which students that have a lower median household income may consequently receive lower quality education. These patterns reveal how regional economic conditions can result in systemic inequities due to how states value public education.

The scatterplot helps visualize if there is a relationship between the percentage of state gross domestic product (GDP) that is spent on K-12 education and funding gaps per student. There is not a correlation between these two given that states that spent a greater percent of their GDP on K-12 education did not consistently overcome funding gaps. The visualization does reveal a regional pattern where all the Northeastern states showed overfunding per student, Midwestern states had a range from under to overfunded, and Southern states had a mix with a majority of them being underfunded. Western states were similarly spread across under and overfunded with a distinct outlier group of high educational spending and overfunding per student. This reveals that the amount of funding alone may not necessarily translate to funding per student, and that the funding mechanism is likely an important factor influencing this relationship.

To visualize the relationship between state performance and national education standards, we selected a horizontal bar chart in Tableau to display the average score differences from the national public average across all U.S. states. This chart type was chosen for its clarity in allowing side-by-side comparison of performance disparities, making it easy to observe which states significantly exceed or fall below the national average. Each bar represents the deviation in average score from the national public school score baseline, allowing viewers to quickly identify geographic patterns and performance trends. The visualization shows how academic outcomes vary by state and relates to other financial data on state-level education funding.

This visualization relates to our project because performance gaps revealed in this chart suggest that educational outcomes are not solely determined by student ability or local conditions, but are linked to how much and how equitably states invest in their public education systems. States that underperform relative to the national average may also be those offering lower teacher salaries and allocating fewer resources to education overall, reinforcing systemic inequities. By combining salary data with performance metrics, this chart strengthens the argument that funding disparities contribute to uneven educational outcomes nationwide.

By comparing the Tableau visualizations of state-by-state teacher salary data and student performance metrics, patterns of the relationship between compensation, retention, and educational outcomes becomes apparent. The data reveals that states investing more in educator pay generally see higher student performance. For example, states like Massachusetts, Connecticut, Minnesota, and New Jersey rank within the top 10 in both teacher salary and average student scores. For each of these states, over 30% of their students are achieving proficiency or higher. These states also tend to experience higher stability and competitive recruitment, which likely contributes to continuing the cycle of having consistent educational quality and student success. On the other hand, states like Mississippi, New Mexico, and West Virginia appear on the lower end of the salary and performance spectrum, with low proficiency rates and average scores more than 10 points below the national average. It is also important to note that there were also some discrepancies found between salary increases and student achievement. For example, although New Mexico implemented a significant percent increase in salary, student scores did not reflect this as their performance did not rank in the top 10. This suggests that improvement in performance is not immediate and likely depends on factors such as how salary increases are impacted by broader systemic changes like training, resources, and school infrastructure. Overall, the data shows a moderate to strong positive trend between salary and performance. On average, higher salaries correlate with better performance from students. For example, there are some outliers like Florida that have relatively low salaries but mid range performance. This can be due to factors like cost of living, teacher-student ratios, and state education policy. Ultimately, supporting the conclusion that teacher salary is heavily correlated with educational performance. The outliers support our thesis that systemic inequities drive how states fund their educational systems, directly impacting student achievement and future success. As a result, if states want to improve student outcomes, they should consider investing more in teacher compensation.

While it may be easy to say that increasing salaries and funding will lead to better student outcomes, the truth is really not that simple. Increasing salaries, for example, is typically done in locations where the cost of living is increasing as well – so the benefit of a salary increase is offset. When it comes to political solutions, it appears that Democrat-run states tend to have better student outcomes, but they also tend to have wealthier students and populations, which is highly correlated with positive academic outcomes. Ultimately, the true cause of student achievement cannot be determined; but, some factors can be determined to affect student achievement, like the ones mentioned in this project: state funding, teacher salaries, and political alignment (of the state).