Were you adding context though? Does it justify the situation if a percentage of people are migrants (who often are fluent in a language above the given literacy btw.)?
For real literacy skills in the US are a huge problem, it is a systemic problem of which the burden is heavily placed on individuals that are marginalized. Neolibs might quote:
It is estimated that these negative social and economic outcomes cost the United States $362.49 billion annually.