| Index | Hornbrook | California | National |
| Average Test Scores | 30% | 43% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Hornbrook | California | National |
| Completed 8th grade | 64.6% | 81.1% | 84.3% |
| Completed high school | 64.6% | 79.8% | 83.0% |
| Completed some college | 48.8% | 61.5% | 59.4% |
| Completed associate degree | 8.7% | 39.8% | 38.5% |
| Completed bachelors | 7.1% | 32.0% | 30.3% |
| Completed masters | 0.0% | 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 n/a public schools, n/a private schools and n/a post-secondary schools in Hornbrook. Using the proficiency score averages, the average test scores for Hornbrook, CA schools is 30%. The average student to teacher ratio is n/a. In Hornbrook, CA, an average of 64.6% of students have completed 8th grade and an average of 64.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Montague, CA | 1,519 | 38% | 21.4% |
| Yreka, CA | 7,589 | 34% | 28.3% |
| Hornbrook, CA | 243 | 30% | 37.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Koyuk, AK | 243 | 10% | 79.2% |
| McNeal, AZ | 243 | 40% | 16.7% |
| Prairie Home, MO | 243 | 40% | 16.7% |
| Lead Hill, AR | 244 | 41% | 15.1% |
| Seneca, OR | 242 | 50% | 4.2% |
| Hornbrook, CA | 243 | 30% | 37.5% |
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