| Index | San Diego | Texas | National |
| Average Test Scores | 31% | 47% | 48% |
| Student/Teacher ratio | 14:1 | 14:1 | 16:1 |
| Total public schools | 4 | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | San Diego | Texas | National |
| Completed 8th grade | 64.7% | 79.3% | 84.3% |
| Completed high school | 61.4% | 77.8% | 83.0% |
| Completed some college | 31.2% | 57.3% | 59.4% |
| Completed associate degree | 11.9% | 34.9% | 38.5% |
| Completed bachelors | 5.1% | 28.1% | 30.3% |
| Completed masters | 1.8% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 4 public schools, n/a private schools and n/a post-secondary schools in San Diego. Using the proficiency score averages, the average test scores for San Diego, TX schools is 31%. The average student to teacher ratio is 14:1. In San Diego, TX, an average of 64.7% of students have completed 8th grade and an average of 61.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Benavides, TX | 2,077 | 35% | 28.1% |
| Alice, TX | 18,859 | 31% | 35.5% |
| San Diego, TX | 4,062 | 31% | 35.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Boyertown, PA | 4,061 | 69% | 43.1% |
| Clearwater, SC | 4,060 | 46% | 4.2% |
| Lolo, MT | 4,064 | 40% | 16.7% |
| North East, PA | 4,065 | 73% | 51.4% |
| Peotone, IL | 4,066 | 33% | 30.6% |
| San Diego, TX | 4,062 | 31% | 35.1% |
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