This bubble chart explores the relationship between average teacher salary and graduation rates across Massachusetts schools, with each circle representing a school. The position encodes salary on the x-axis and graduation percentage on the y-axis, while circle area reflects total enrollment. Circle color uses a red-to-green sequential scale (`d3.scaleSequential` with `d3.interpolateRdYlGn`) to highlight graduation performance. The visualization is built with D3 v7, rendering SVG elements, and includes interactive tooltips on hover. Data comes from the MA_Schools.csv dataset, filtered to include only schools with valid salary and graduation values.