| Index | South Monrovia Island | California | National |
| Average Test Scores | n/a | 43% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |


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| Index | South Monrovia Island | California | National |
| Completed 8th grade | 69.2% | 81.1% | 84.3% |
| Completed high school | 67.3% | 79.8% | 83.0% |
| Completed some college | 39.3% | 61.5% | 59.4% |
| Completed associate degree | 19.9% | 39.8% | 38.5% |
| Completed bachelors | 12.4% | 32.0% | 30.3% |
| Completed masters | 3.5% | 11.9% | 11.5% |
| Completed professional degree | 0.5% | 3.9% | 3.3% |
| Completed doctorate | 0.2% | 1.6% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in South Monrovia Island. Using the proficiency score averages, the average test scores for South Monrovia Island, CA schools is n/a. The average student to teacher ratio is n/a. In South Monrovia Island, CA, an average of 69.2% of students have completed 8th grade and an average of 67.3% 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 Monrovia Island, CA | 6,565 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Geneseo, IL | 6,566 | 34% | 30.0% |
| Rossford, OH | 6,567 | 60% | 24.0% |
| Bondurant, IA | 6,567 | 75% | 55.6% |
| Lake City, SC | 6,562 | 28% | 42.7% |
| Milton, PA | 6,558 | 58% | 21.2% |
| South Monrovia Island, CA | 6,565 | n/a |