| Index | Castroville | California | National |
| Average Test Scores | 29% | 43% | 48% |
| Student/Teacher ratio | 22:1 | 20:1 | 16:1 |
| Total public schools | 7 | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Castroville | California | National |
| Completed 8th grade | 50.3% | 81.1% | 84.3% |
| Completed high school | 44.8% | 79.8% | 83.0% |
| Completed some college | 22.3% | 61.5% | 59.4% |
| Completed associate degree | 8.7% | 39.8% | 38.5% |
| Completed bachelors | 5.1% | 32.0% | 30.3% |
| Completed masters | 1.4% | 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 7 public schools, n/a private schools and n/a post-secondary schools in Castroville. Using the proficiency score averages, the average test scores for Castroville, CA schools is 29%. The average student to teacher ratio is 22:1. In Castroville, CA, an average of 50.3% of students have completed 8th grade and an average of 44.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Pacific Grove, CA | 15,471 | 67% | 40.0% |
| Spreckels, CA | 373 | 58% | 19.8% |
| Capitola, CA | 10,090 | 57% | 17.7% |
| Monterey, CA | 28,575 | 51% | 6.1% |
| Chualar, CA | 1,413 | 47% | 2.1% |
| Castroville, CA | 6,332 | 29% | 40.6% |
| City | Population | Avg. Test Scores | National Avg. |
| Red Lion, PA | 6,334 | 54% | 13.2% |
| Kingston Estates, NJ | 6,335 | 57% | 18.8% |
| Chillicothe, IL | 6,326 | 46% | 4.0% |
| Braidwood, IL | 6,338 | 40% | 17.4% |
| Swarthmore, PA | 6,339 | 70% | 46.4% |
| Castroville, CA | 6,332 | 29% | 40.6% |
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