This D3.js scatter plot visualizes student grades from a CSV file, plotting English scores on the x-axis and physics scores on the y-axis, with points colored by class (First class, Second class, or other). It uses `d3.csv` to load the data, `d3.scaleLinear` for axes, and `d3.axisLeft`/`d3.axisBottom` for tick marks. The SVG rendering includes circles sized by a fixed radius, with axis labels for English and science. The code also reads additional metrics (science and maths) into each data point, though these are not directly used for the visual encoding.