| Index | Winchester | California | National |
| Average Test Scores | 54% | 43% | 48% |
| Student/Teacher ratio | 18:1 | 20:1 | 16:1 |
| Total public schools | 4 | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Winchester | California | National |
| Completed 8th grade | 67.3% | 81.1% | 84.3% |
| Completed high school | 64.8% | 79.8% | 83.0% |
| Completed some college | 33.5% | 61.5% | 59.4% |
| Completed associate degree | 15.6% | 39.8% | 38.5% |
| Completed bachelors | 11.7% | 32.0% | 30.3% |
| Completed masters | 3.9% | 11.9% | 11.5% |
| Completed professional degree | 0.0% | 3.9% | 3.3% |
| Completed doctorate | 0.0% | 1.6% | 1.3% |
There are a total of 4 public schools, n/a private schools and n/a post-secondary schools in Winchester. Using the proficiency score averages, the average test scores for Winchester, CA schools is 54%. The average student to teacher ratio is 18:1. In Winchester, CA, an average of 67.3% of students have completed 8th grade and an average of 64.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Murrieta, CA | 114,066 | 57% | 19.0% |
| Menifee, CA | 92,968 | 47% | 1.5% |
| Romoland, CA | 2,755 | 46% | 3.6% |
| Nuevo, CA | 6,999 | 42% | 12.8% |
| Beaumont, CA | 48,272 | 40% | 16.3% |
| Winchester, CA | 2,957 | 54% | 13.0% |
| City | Population | Avg. Test Scores | National Avg. |
| New Britain, PA | 2,957 | 74% | 54.2% |
| Valley View, PA | 2,956 | 54% | 12.5% |
| Greensboro, AL | 2,956 | 22% | 53.5% |
| Portageville, MO | 2,959 | 42% | 12.2% |
| Wise, VA | 2,954 | 89% | 84.9% |
| Winchester, CA | 2,957 | 54% | 13.0% |
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