Improvement over the previous year's result also factors into the index, as does a comparison of how low-income and non-low-income students perform, and how the school's results stack up against others of similar demographics.
This database shows Southwest Washington schools' results for the 2010-11 school year.
The highest score is 7; the lowest is 1. Click here for a detailed chart of how the index is calculated.
You can select only a district to see all schools within it, or select a school from the dropdown menu after selecting a district.
If you leave both "school" and "district" set to "Any," and select a status, you will see all schools in the county that performed at that level.