| Index | El Cajon | California | National |
| Average Test Scores | 39% | 43% | 48% |
| Student/Teacher ratio | 21:1 | 20:1 | 16:1 |
| Total public schools | 39 | 8,308 | 79,221 |
| Total private schools | 18 | 3,438 | 24,874 |
| Total post-secondary schools | 9 | 1,085 | 7,963 |
| Index | El Cajon | California | National |
| Completed 8th grade | 79.1% | 81.1% | 84.3% |
| Completed high school | 77.3% | 79.8% | 83.0% |
| Completed some college | 52.3% | 61.5% | 59.4% |
| Completed associate degree | 26.7% | 39.8% | 38.5% |
| Completed bachelors | 19.1% | 32.0% | 30.3% |
| Completed masters | 5.6% | 11.9% | 11.5% |
| Completed professional degree | 1.8% | 3.9% | 3.3% |
| Completed doctorate | 0.7% | 1.6% | 1.3% |
There are a total of 39 public schools, 18 private schools and 9 post-secondary schools in El Cajon. Using the proficiency score averages, the average test scores for El Cajon, CA schools is 39%. The average student to teacher ratio is 21:1. In El Cajon, CA, an average of 79.1% of students have completed 8th grade and an average of 77.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Coronado, CA | 24,526 | 73% | 51.6% |
| Poway, CA | 49,780 | 60% | 25.2% |
| Bonita, CA | 12,470 | 55% | 14.9% |
| Santee, CA | 57,407 | 53% | 9.6% |
| San Diego, CA | 1,414,545 | 51% | 6.9% |
| El Cajon, CA | 103,249 | 39% | 19.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Burbank, CA | 103,411 | 56% | 17.3% |
| Las Cruces, NM | 102,950 | 27% | 44.6% |
| Rialto, CA | 103,549 | 30% | 37.8% |
| Sparks, NV | 102,895 | 42% | 13.3% |
| San Mateo, CA | 103,619 | 51% | 5.4% |
| El Cajon, CA | 103,249 | 39% | 19.5% |
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