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What a pointless bubble chart. If you graph the number of test takers, then of course the states with the largest population (CA, TX) will have the largest bubbles.

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This mistake is commonly called making a heatmap of population. Works for nearly any variable - if not per-capita, then you just get a population map. Gun deaths, Methodist ministers, furries, whatever.

If a person random person on the internet looks at it naively, it doesn't provide much information. A person who knows about the US educational system there are anomalies.

Compare IL to PA or MD to FL and NY.

Use https://en.wikipedia.org/wiki/Us_state_population as reference.

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