I'm searching for the most reliable source for granular American literacy population data.
I am conducting an analysis, reporting, and data visualization of American literacy. To do this, I am searching for the most granular, most reliable, population data of US literacy rates (preferably by year!).
Most .edu/.gov data sources I've discovered so far are very aggregate (i.e., "Total statewide literacy rate today"), making it difficult to obtain the raw data for my own analysis.
Do you have any suggestions or sources to solve this problem?