Technology has made data visualization accessible to everyone. Indeed, this is a good thing. Yet it is

Question:

Technology has made data visualization accessible to everyone. Indeed, this is a good thing. Yet it is up to the user to properly use visualization tools. Below is a pie chart built a few years back, using an open portal platform. The intention was to summarize school performance data. Specifically, the data included two variables:
• One indicating school subject and school year (e.g. M10-11 for Math in the 2010–2011 academic year).
• The second, establishing the target: minimum percentage of students that pass standardized tests.

These two variables were used to create the chart. Mention at least three things that are wrong with this chart.