| Index | La Mesa | California | National |
| Average Test Scores | n/a | 10% | 48% |
| Student/Teacher ratio | 22:1 | 20:1 | 16:1 |
| Total public schools | 27 | 8,308 | 79,221 |
| Total private schools | 7 | 3,438 | 24,874 |
| Total post-secondary schools | 3 | 1,085 | 7,963 |
| Index | La Mesa | California | National |
| Completed 8th grade | 89.7% | 81.1% | 84.3% |
| Completed high school | 89.2% | 79.8% | 83.0% |
| Completed some college | 71.9% | 61.5% | 59.4% |
| Completed associate degree | 43.9% | 39.8% | 38.5% |
| Completed bachelors | 35.4% | 32.0% | 30.3% |
| Completed masters | 12.0% | 11.9% | 11.5% |
| Completed professional degree | 2.7% | 3.9% | 3.3% |
| Completed doctorate | 1.1% | 1.6% | 1.3% |
There are a total of 27 public schools, 7 private schools and 3 post-secondary schools in La Mesa. Using the proficiency score averages, the average test scores for La Mesa, CA schools is n/a. The average student to teacher ratio is 22:1. In La Mesa, CA, an average of 89.7% of students have completed 8th grade and an average of 89.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| La Mesa, CA | 59,125 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Brookline, MA | 59,180 | 76% | 57.6% |
| Rowlett, TX | 59,203 | 48% | 0.3% |
| Chapel Hill, NC | 59,005 | 63% | 30.8% |
| Redmond, WA | 59,268 | 84% | 73.5% |
| Idaho Falls, ID | 58,933 | 44% | 8.5% |
| La Mesa, CA | 59,125 | n/a |
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