This bar chart shows the distribution of students by race/ethnicity and test preparation course completion, with the y-axis counting total students and color encoding whether the course was completed. The visualization uses the Vega-Lite API with D3.js, retrieving data from a CSV hosted on GitHub Gist. A bar chart is rendered by grouping records by race/ethnicity and test preparation status, with tooltips revealing exact counts for each group. The chart’s appearance is customized through a config file that adjusts axis styles and label colors.