| Index | Williams | California | National |
| Average Test Scores | 35% | 43% | 48% |
| Student/Teacher ratio | 19:1 | 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 | Williams | California | National |
| Completed 8th grade | 54.9% | 81.1% | 84.3% |
| Completed high school | 52.1% | 79.8% | 83.0% |
| Completed some college | 31.9% | 61.5% | 59.4% |
| Completed associate degree | 13.9% | 39.8% | 38.5% |
| Completed bachelors | 8.4% | 32.0% | 30.3% |
| Completed masters | 2.3% | 11.9% | 11.5% |
| Completed professional degree | 1.0% | 3.9% | 3.3% |
| Completed doctorate | 0.5% | 1.6% | 1.3% |
There are a total of 4 public schools, n/a private schools and n/a post-secondary schools in Williams. Using the proficiency score averages, the average test scores for Williams, CA schools is 35%. The average student to teacher ratio is 19:1. In Williams, CA, an average of 54.9% of students have completed 8th grade and an average of 52.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Grimes, CA | 462 | 50% | 4.2% |
| Colusa, CA | 6,111 | 47% | 2.6% |
| Arbuckle, CA | 3,368 | 38% | 21.9% |
| Maxwell, CA | 1,256 | 37% | 22.6% |
| Meridian, CA | 278 | 29% | 38.9% |
| Williams, CA | 5,284 | 35% | 26.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Glasgow Village, MO | 5,285 | 11% | 76.6% |
| South Amherst, MA | 5,283 | 40% | 17.7% |
| Brady, TX | 5,282 | 49% | 1.7% |
| Rothschild, WI | 5,286 | 38% | 21.9% |
| Lindale, GA | 5,282 | 40% | 17.4% |
| Williams, CA | 5,284 | 35% | 26.6% |
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