This visualization displays a matrix of six bar charts comparing average salary metrics across different school types, using data loaded from a CSV file of college earnings. Each chart represents a different salary variable, such as Starting Median Salary or Mid-Career 90th Percentile Salary, with bars colored steelblue that turn orange on hover. The code uses d3.csv for data loading, d3.rollup for aggregating averages by school type, and d3.scaleBand and d3.scaleLinear for axes, rendering SVG charts with interactive tooltips.