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# SchoolDigger
> Free school rankings, ratings, and data for every K-12 school in the United States
SchoolDigger helps parents, homebuyers, researchers, and educators compare and evaluate over 120,000 public and private schools and 18,500 school districts across all 50 states. SchoolDigger's proprietary rankings use standardized test scores to rate every school on a 0-5 star scale.
## What You'll Find
- **School Rankings**: Statewide rankings for elementary, middle, and high schools based on standardized test performance, updated annually. Rankings go back 20+ years.
- **School Profiles**: Detailed pages for every school with enrollment, demographics, test scores, teacher ratios, spending per student, graduation rates, and boundary maps.
- **District Profiles**: Data on 18,500+ districts including staffing, finance, test scores, and attendance boundaries.
- **School Comparisons**: Side-by-side comparisons of schools within a city, zip code, or district.
- **Search Tools**: Find schools by name, location, zip code, or district. Filter by level, type (charter, magnet, private), and more.
- **District Attendance Boundaries**: Maps showing which neighborhoods feed into which districts.
- **Historical Data**: Up to 35 years of enrollment and demographic trends for every school.
## Data Sources
SchoolDigger aggregates data from the National Center for Education Statistics (NCES), state departments of education, and the U.S. Census Bureau. Data is updated continuously.
## Ranking Methodology
Schools are ranked within their state and level (elementary, middle, high) using a standardized score derived from state test results. The methodology normalizes across different tests, grades, and subjects to produce a single comparable score. Full details: https://www.schooldigger.com/aboutrankingmethodology.aspx
## Who Uses SchoolDigger
SchoolDigger data is trusted by Money Magazine, Century 21, Harvard, IXL, Precisely, Coldwell Banker, and Franklin Covey. Millions of pare