{"version":"1.0","type":"rich","title":"AP Test Scores of MA Districts by Year","description":"This stacked bar chart shows AP test participation and score distributions for Massachusetts school districts by year, with each bar representing the total number of tests at each score level. The visualization reveals that overall AP participation has increased over time, while the highest score (5) remains stable and score 2 has grown substantially. The chart uses Vega-Lite via the vega-lite-api wrapper with D3 for CSV loading, and data comes from the Massachusetts DESE AP performance dataset. Each stack segment is colored by score level, with tooltips displaying district names.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/994860e04695449fb499a3e36828e940?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}