| Index | South San Gabriel | California | National |
| Average Test Scores | 60% | 43% | 48% |
| Student/Teacher ratio | 20:1 | 20:1 | 16:1 |
| Total public schools | 1 | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | South San Gabriel | California | National |
| Completed 8th grade | 71.2% | 81.1% | 84.3% |
| Completed high school | 69.5% | 79.8% | 83.0% |
| Completed some college | 44.8% | 61.5% | 59.4% |
| Completed associate degree | 30.6% | 39.8% | 38.5% |
| Completed bachelors | 21.2% | 32.0% | 30.3% |
| Completed masters | 7.6% | 11.9% | 11.5% |
| Completed professional degree | 2.5% | 3.9% | 3.3% |
| Completed doctorate | 1.0% | 1.6% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in South San Gabriel. Using the proficiency score averages, the average test scores for South San Gabriel, CA schools is 60%. The average student to teacher ratio is 20:1. In South San Gabriel, CA, an average of 71.2% of students have completed 8th grade and an average of 69.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| San Marino, CA | 13,020 | 88% | 84.1% |
| La Cañada Flintridge, CA | 20,078 | 87% | 82.0% |
| South Pasadena, CA | 25,478 | 82% | 70.2% |
| Arcadia, CA | 57,053 | 74% | 53.2% |
| La Crescenta-Montrose, CA | 20,171 | 72% | 49.2% |
| South San Gabriel, CA | 8,420 | 60% | 24.0% |
| City | Population | Avg. Test Scores | National Avg. |
| Rice Lake, WI | 8,420 | 47% | 1.3% |
| Virginia, MN | 8,421 | 49% | 2.3% |
| Dalhart, TX | 8,422 | 37% | 22.2% |
| Seneca, SC | 8,424 | 51% | 6.3% |
| Donaldsonville, LA | 8,424 | 52% | 9.0% |
| South San Gabriel, CA | 8,420 | 60% | 24.0% |
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