US Counties With the Lowest Trend in Average Test Scores

2,227 US counties ranked by trend in average test score, from lowest to highest. First are Washington County, CO (-0.0856), Park County, CO (-0.0794) and Hyde County, SD (-0.0791). The middle one of the 2,227 has -0.00305.

What this measures

Whether each new group of students scores higher or lower than the group before, in grade levels per year. Source: Stanford Education Data Archive.

For most measures, a national ranking mostly sorts places by income and by how urban they are. Each county’s own page compares it with the 50 counties most like it instead, which is often the fairer view.

The 100 lowest counties

More on trend in average test score

• US Counties With the Highest Trend in Average Test Scores
• Trend in average test score by US county: map by year and what it goes with

A ranking describes places, not the people in them, and a high or low place does not by itself say why. All US rankings.