This fork of a D3.js dashboard visualizes student performance data from a CSV file, comparing average grades before and after AI usage across age groups in a line chart, and the average grade improvement by different AI tools in a bar chart. The visualization uses D3 v7 APIs including `d3.csv`, `d3.group`, `d3.mean`, `d3.scaleLinear`, and `d3.line` to load, clean, and render the data as SVG. The interactive dashboard displays the data in a two-column grid layout with styled cards.